Aquatic birds
Mallard duck (Anas platyrhynchos)
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
SELENOMETHIONINE | increased @ 80 ppm | mortality versus controls | Male | Adult | 21/dose | Toxicity Factor Datasets | 1 yr | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
BORIC ACID, SELENOMETHIONINE | no effect due to added Se | onset of egg laying, eggshell thickness, egg weight, egg fertility, embryo deformities versus controls | Both Male and Female | Both Adults and Juveniles | 14 pairs/treatment | Toxicity Factor Datasets | 1 yr | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
LEAD COMPOUNDS | no effect | body weight versus controls | Male | Adult | 10/ Pb treatment; 5/control treatment | Toxicity Factor Datasets | approx. 5 mo | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
LEAD COMPOUNDS | Equation: fecal Pb conc./fecal acid insoluble ash content = 61 + (1.06 x sediment Pb conc.) | relation between waterfowl fecal lead concentration (dry wt) and sediment lead concentration (dry wt) | Not Reported | Not Reported | 521 fecal analyses at 11 wetlands (at least 20 per wetland) | Coeur d'Alene and St. Joe River Basins | Toxicity Factor Datasets |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
METHYLMERCURY CHLORIDE, SELENOMETHIONINE | no effect | egg laying interval, egg weight, egg shell thickness, fertility, duckling survival, hatchling body weights versus controls | Both Male and Female | Both Adults and Juveniles | 12/group | Toxicity Factor Datasets | 18 mo | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
BISMUTH COMPOUNDS, IRON COMPOUNDS | no effect | body weight, organ weights (liver, kidney, gonads, gizzard) or hematocrit versus controls | Both Male and Female | Adult | 20 males, 20 females per group | Toxicity Factor Datasets | 6-8 mo | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
BISMUTH COMPOUNDS, IRON COMPOUNDS, LEAD (elemental) | 237(17.2) ppm, kidney; 1936(233) ppm, liver; 90.6(6.85) ppm, ovary; 13.1(1.29) ppm, testis | mean(SE) wet wt concentrations of Fe in Fe-dosed birds | Both Male and Female | Adult | 18 pairs/group (control, Fe, Bi); 6 pairs/Pb group | Toxicity Factor Datasets | 6-8 mo | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|
LEAD (elemental) | decreased | bw versus controls | Both Male and Female | Not Reported | 5-6/group | Toxicity Factor Datasets | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
CHLORPYRIFOS | 29.4 mg/kg | LD50 | Both Male and Female | Juvenile | 5 | Toxicity Factor Datasets | 7 days | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
DIELDRIN | decreased @ 10 ppm (serotonin only) and 30 ppm | Serotonin, norepinephrine, and dopamine levels versus controls | Both Male and Female | Juvenile | 3-6 per group | Toxicity Factor Datasets | 75 days | Laboratory |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
---|---|---|---|---|---|---|---|---|---|
Body Fat (total or %) | 134 | g (lipid) | Female | Both Adults and Juveniles | 12 | Mingo Basin | Exposure Factor Datasets | alternate plumate - early migrants, paired | 7 SE |
Body Fat (total or %) | 111 | g (lipid) | Female | Both Adults and Juveniles | 9 | Mingo Basin | Exposure Factor Datasets | alternate plumage - early migrants, unpaired | 8 SE |
Body Fat (total or %) | 145 | g (lipid) | Female | Both Adults and Juveniles | 19 | Mingo Basin | Exposure Factor Datasets | alternate plumage, paired | 7 SE |
Body Fat (total or %) | 102 | g (lipid) | Female | Both Adults and Juveniles | 14 | Mingo Basin | Exposure Factor Datasets | alternate plumate, unpaired | 12 SE |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Home Range | 540 | ha | Female | Adult | 8 | Bemidji, Beltrami Co. | Exposure Factor Datasets |
Home Range | 620 | ha | Male | Adult | 5 | Bemidji, Beltrami Co. | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
---|---|---|---|---|---|---|---|---|---|
Time of Nesting | April 26 - June 6 | Not Reported | prairie pothole region of North Dakota | Exposure Factor Datasets | |||||
Time of Migration or Dispersal | May 5 - May 14 | Female | Not Reported | prairie pothold region of North Dakota | Exposure Factor Datasets | second year females | |||
Time of Migration or Dispersal | April 20 - May 14 | Female | Adult | Not Reported | prairie pothole region of North Dakota | Exposure Factor Datasets | three years and older | ||
Clutch or Litter Size | 8.49 | eggs | Female | Adult | 57 | prairie pothole region of North Dakota | Exposure Factor Datasets | second year | 1.23 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 10.3 | eggs | Female | Adult | 46 nests | prairie pothole region of North Dakota | Exposure Factor Datasets | 1.1 SD | |
Time of Mating/ Laying | April 4 - July (median = May) | time of clutch initiation | Female | Adult | 265 nests | eastern - south central North Dakota, near Jamestown | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Dietary Composition | corn (51.7%), milo (2.6%), other plant (16.5%), mollusca (snails, clams; 2.9%), insecta (0.3%) | food item occurrence in esophageal contents, expressed as aggregate percent dry weight | Not Reported | Not Reported | 68 birds | along Platte River, between Lexington and Gibbon, Nebraska | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|---|
Population Density | 0.25 | For explanation of classifications, see p. 11 (classifications are Kern NWR, hunting clubs, etc). | birds/ha | Not Reported | Not Reported | Not Reported | hunting clubs | Exposure Factor Datasets | wintering birds |
Population Density | 0.5 | For explanation of classifications, see p. 11 (classifications are Kern NWR, hunting clubs, etc). | birds/ha | Female | Not Reported | Not Reported | preirrigated croplands | Exposure Factor Datasets | wintering birds |
Population Density | 0.07 | For explanation of classifications, see p. 11 (classifications are Kern NWR, hunting clubs, etc). | birds/ha | Not Reported | Not Reported | Not Reported | evaporation ponds | Exposure Factor Datasets | wintering birds |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|
Growth Rate | 1.81%/d | maximum growth rate relative to asymptotic weight | Male | Juvenile | 48 | Exposure Factor Datasets | 0-154 d | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Population Density | 30,438 | mean number of ducks counted in U.S. Fish and Wildlife Service mid-winter inventories 1978-1987 | Both Male and Female | Both Adults and Juveniles | Not Reported | San Joaquin Valley | Exposure Factor Datasets | |
Population Density | 15,221 | mean number of ducks counted in U.S. Fish and Wildlife Service mid-winter inventories 1978-1987 | Both Male and Female | Both Adults and Juveniles | Not Reported | Suisun Marsh | Exposure Factor Datasets | Solano |
Population Density | 4,667 | mean number of ducks counted in U.S. Fish and Wildlife Service mid-winter inventories 1978-1987 | Both Male and Female | Both Adults and Juveniles | Not Reported | San Francisco Delta | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|
Survival/ Mortality | 0.586 | estimated annual survival rate (1960-1971) | Female | Adult | Not Reported | Malheur National Wildlife Refuge | Exposure Factor Datasets | 0.081 (SE) |
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
---|---|---|---|---|---|---|---|
Dietary Composition | flora (89.4%), fauna (10.6%) | Both Male and Female | Juvenile | 94 | Bear River Migratory Bird Refuge | Exposure Factor Datasets | 36-45 d |
Dietary Composition | flora (99.1%), fauna (0.92%) | Both Male and Female | Juvenile | 94 | Bear River Migratory Bird Refuge | Exposure Factor Datasets | 46-55 d |
Dietary Composition | flora (99.9%), fauna (0.08%) | Both Male and Female | Juvenile | 94 | Bear River Migratory Bird Refuge | Exposure Factor Datasets | 52-60 d |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 936.1 | mean body weight of 8 week old mallards | g | Both Male and Female | Juvenile | 15 | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 1,240 | g | Female | Adult | 220 | Illinois and Mississippi river valleys | Exposure Factor Datasets | hunter-harvested | 8 SE |
Body Weight - Mean | 1,163 | g | Male | Juvenile | 61 | Illinois and Mississippi river valleys | Exposure Factor Datasets | hunter harvested | 12 SE |
Body Weight - Mean | 1,078 | g | Female | Adult | 105 | Illinois and Mississippi river valleys | Exposure Factor Datasets | hunter-harvested | 11 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Survival/ Mortality | 59 | Survival rates, not mortality. | % | Female | Adult | Not Reported | Lower Klamath National Wildlife Refuge, CA | Exposure Factor Datasets | 3.4 SE |
Survival/ Mortality | 52 | Survival rates, not mortality. | % | Female | Juvenile | Not Reported | Lower Klamath National Wildlife Refuge | Exposure Factor Datasets | 7.8 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|
Dietary Composition | gastropoda (0.001), crustacea (0.007), insecta (0.003), and plant (0.980) | mean relative proportions (wet mass) of stomach contents | Both Male and Female | Not Reported | 22 | St. Lawrence River | Exposure Factor Datasets | CANADA |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error | Lab |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 10.4 | mean clutch size from first nesting attempt | eggs | Female | Adult | 151 | Exposure Factor Datasets | 0.2 (SE) | Laboratory | |
Time of Nesting | April-June | date of nest initiation | Female | Adult | 151 | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition |
---|---|---|---|---|---|---|---|---|---|---|
Territory Size | 70 | mean length of drainage ditch (5 ft wide) defended | yd | Male | Adult | 8 ducks | Conaway Ranch | Exposure Factor Datasets | Yolo | breeding |
Time of Hatching or Parturition | May 16-29 | peak hatching period | Both Male and Female | Hatchling | Not Reported | Conaway Ranch | Exposure Factor Datasets | Yolo | breeding |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|---|
Home Range | 467.8 | ha | Female | Adult | 6 | Missouri Couteau, south-central North Dakota | Exposure Factor Datasets | ||
Home Range | 110.9 | Breeding home range. | ha | Female | Adult | 6 | Missouri Coteau of south-central North Dakota | Exposure Factor Datasets | Laying females |
Exposure Endpoint Type | Endpoint Value | Location | Type |
---|---|---|---|
Dietary Composition | Review | Mingo Basin, Missouri | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|
Survival/ Mortality | 0.998 | spring-summer survival (proportion) | Male | Adult | 18,650 | Alberta, Saskatchewan, Manitoba | Exposure Factor Datasets | CANADA |
Exposure Endpoint Type | Endpoint Value | Location | Type | Condition |
---|---|---|---|---|
Time of Mating/ Laying | April 10 (end) | southern part of U.S. breeding range | Exposure Factor Datasets | laying |
Brown Pelican (Pelecanus occidentalis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
---|---|---|---|---|---|---|---|---|---|
Age at Sexual Maturity | 3 | age of first nesting | yr | Not Reported | Adult | 13 nests | Barataria Bay | Exposure Factor Datasets | 3 yr |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Age at Fledging, Metamorphosis, Weaning | range of mean fledging ages over four years | days | Not Reported | Fledgling | 7-12 birds/year | Tarpon Key | Exposure Factor Datasets | |
Body Weight - Mean | body weight at hatching | g | Not Reported | Nestling | 47 birds | Tarpon Key | Exposure Factor Datasets | |
Growth Rate | see figure | daily growth rates of wild nestlings | Not Reported | Nestling | varied | Tarpon Key | Exposure Factor Datasets |
Double-crested Cormorant (Phalacrocorax auritus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Time of Nesting | year-round | time during which active nests were observed | Both Male and Female | Adult | 30 colonies | south FL | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Hatching Success | 76% | proportion of nests in which at least one egg hatched | Both Male and Female | Hatchling | 1056 nests | San Francisco Bay estuary | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 1.33 | kg | Not Reported | Both Adults and Juveniles | 5 cormorants | Exposure Factor Datasets | Laboratory | ||
Metabolic Rate | 85 | measured during the day over temperature range -10 to 45 C | cm^3 O2/g BW/hr | Not Reported | Both Adults and Juveniles | 5 cormorants | Exposure Factor Datasets | Laboratory | |
Metabolic Rate | 74 | measured at night over temperature range -10 to 45 C | cm^3 O2/g BW/hr | Not Reported | Both Adults and Juveniles | 5 cormorants | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | range in mean clutches in ground nests (across 4 years) | Female | Adult | 34-127 nests/colony | Lake Ontario (43 deg 53'N, 76 deg 24'W) | Exposure Factor Datasets | spring | |
Fledging or Weaning Rate | 2.14 | mean number of young produced/active nest (across 10 yrs) | Both Male and Female | Fledgling | Not Reported | Lake Ontario (43 deg 53'N, 76 deg 24'W) | Exposure Factor Datasets | spring |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|
Dietary Composition | herring (25%), sculpin (92%), flounder (8%), anemones (8%), snails (17%), mussels (33%), amphipods (25%), isopods (17%), benthic shrimp (25%), crabs (25%), bryozoans (58%), algae (50%) | frequency of occurrence of food items in stomach contents | Not Reported | Both Adults and Juveniles | 12 stomachs | Quoddy Region, New Brunswick | Exposure Factor Datasets | CANADA |
Snowy Plover (Charadrius nivosus formerly Charadrius alexandrinus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|---|
Time of Mating/ Laying | March 29-June 25 (1991), March 11-June 29 (1992) | length of egg laying season in two sample years | Female | Adult | Not Reported | Fuente de Piedra lake, s. Spain | Exposure Factor Datasets | SPAIN | |
Clutch or Litter Size | 2.63 | clutch size | eggs/clutch | Female | Adult | 316 nests | Fuente de Piedra lake, s. Spain | Exposure Factor Datasets | SPAIN |
Fledging or Weaning Rate | 19.3% | Percent of nests in which at least one chick hatched. | % | Both Male and Female | Both Adults and Juveniles | 316 nests | Fuente de Piedra lake, s. Spain | Exposure Factor Datasets | SPAIN |
Killdeer (Charadrius vociferus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Population Density | 14.3 | estimated breeding density in planted field habitat (14 ha) | pairs/100 ha | Both Male and Female | Adult | Not Reported | St. Paul Campus, Univ. of MN | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|
Dietary Composition | Physidae (0.9%), Odonata larvae (1.3%), Corixidae adult (1.3%), Coleoptera adult (25.5%), Coleoptera larvae (21.2%), Coleoptera adult pieces (17.0%), Diptera larvae (18.3%), Hymenoptera adult (6.1%), Unidentified (2.6%), plant fibers (1.3%), grit (4.5%) | volumetric aggregate percent of esophageal contents | Not Reported | Both Adults and Juveniles | 15 birds | Mingo National Wildlife Refuge | Exposure Factor Datasets | migrating |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Population Density | 7.6 (fall), 15.4 (winter), 2.2 (spring) | mean population density | birds/ha | Not Reported | Not Reported | 5 seasons censused | Bolinas Lagoon, Point Reyes National Seashore | Exposure Factor Datasets | Marin |
Least Tern (Sterna antillarum)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 1.73 | mean clutch size | eggs/clutch | Female | Adult | 396 clutches | Cape Romain National Wildlife Refuge | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Hatching Success | 0.79-1.31 | mean hatching success during two years of study | eggs hatched/nest | Not Reported | Chick | 545-606 nests per study year | Sandy Point, West Haven | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Time of Nesting | June 16, June 30, July 1 | mean nest-initiation dates over 3 years of study | Both Male and Female | Adult | 6-17 nests/study year | Yellowstone River | Exposure Factor Datasets |
California Brown Pelican (Pelecanus occidentalis ssp. californicus)
Exposure Endpoint Type | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Fledging or Weaning Rate | range of mean fledging rates (number of fledglings per built nest) over a 6 year period | Not Reported | Fledgling | 76-1258 nests/year | Isla Coronado Norte | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Foraging Distance | distance travelled by radiotagged bird | km/day | Not Reported | Juvenile | 1 bird | south Monterey Bay | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|
Survival/ Mortality | 69% | estimated survival rate of radiotagged rehabilitated oiled birds at 150-180 days post-release | Not Reported | Adult | 16 | Southern California Bight | Exposure Factor Datasets | rehabilitated oiled birds |
Light-footed Clapper Rail (Rallus longirostris ssp. levipes), California Clapper Rail (Rallus longirostris ssp. obsoletus), Yuma Clapper Rail (Rallus longirostris ssp. yumanensis)
Exposure Endpoint Type | Endpoint Value | Location | Type | Countries |
---|---|---|---|---|
Clutch or Litter Size | review | Exposure Factor Datasets | USA | |
Survival/ Mortality | review | Exposure Factor Datasets | USA | |
Survival/ Mortality | review | Exposure Factor Datasets | USA |
California Clapper Rail (Rallus longirostris ssp. obsoletus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Population Density | 0.69 | mean breeding density based on rope drag and call count data | birds/ha | Both Male and Female | Adult | 55 ha | south San Francisco Bay - Ideal Marsh | Exposure Factor Datasets | Alameda |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Population Density | range of mean population densities | birds/acre | Not Reported | Not Reported | 1 marsh | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco | |
Time of Nesting | April | beginning of nesting | Not Reported | Not Reported | 1 marsh | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco |
Yuma Clapper Rail (Rallus longirostris ssp. yumanensis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Home Range | 9 | mean home range size | ha | Not Reported | Adult | 4 birds | lower Colorado River Valley | Exposure Factor Datasets |
Western Snowy Plover (Charadrius nivosus ssp. nivosus formerly Charadrius alexandrinus ssp. nivosus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Time of Mating/ Laying | April 18 to July 15 | period of time from beginning to end of egg laying for one year | Female | Adult | 9 nests | Mono Lake (elev. 1,940 m) | Exposure Factor Datasets | Mono | |
Hatching Success | range in percent of clutches hatching at least one chick (over 4 years) | % | Not Reported | Hatchling | Not Reported | Mono Lake (elev. 1,940 m) | Exposure Factor Datasets | Mono | |
Fledging or Weaning Rate | 1.64 | number of chicks fledged per successful brood (for one year) | fledglings/brood | Not Reported | Fledgling | 22 nests | Mono Lake (elev. 1,940 m) | Exposure Factor Datasets | Mono |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Fledging or Weaning Rate | percent of hatched chicks that fledged (over 6 years) | d | Not Reported | Fledgling | 296 chicks | Pajaro River Mouth | Exposure Factor Datasets | Monterey | |
Survival/ Mortality | 78.6 | percent annual survival | % | Male | Adult | 56 birds | Pajaro River Mouth | Exposure Factor Datasets | Monterey |
Survival/ Mortality | 72.6 | percent annual survival | % | Female | Adult | 73 birds | Pajaro River Mouth | Exposure Factor Datasets | Monterey |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|---|---|---|---|
Hatching Success | 1.73 | average number of chicks per successful brood | chicks/brood | Not Reported | Hatchling | 119 broods | Baja California peninsula | Exposure Factor Datasets | MEXICO | 0.78 SD |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Population Density | number of breeding birds per km of sandy beach surveyed | birds/km | Not Reported | Not Reported | 54.5-200.2 km per survey region | mainland coast | Exposure Factor Datasets |
California Least Tern (Sterna antillarum ssp. browni)
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|
Hatching Success | range of egg hatching rates, 2 years | % | Not Reported | Hatchling | 16-58 nests/year | Cuixmala Beach [19 deg, 22'14"N, 104 deg 59'31"W] | Exposure Factor Datasets | MEXICO |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Age at Sexual Maturity | 2 | age of birds nesting for the first time | yr | Both Male and Female | Adult | 10 pairs | NASA Island, Seal Beach National Wildlife Refuge | Exposure Factor Datasets | Orange |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Age at Sexual Maturity | 2 | earliest age at which adults were known to breed for the first time | yr | Not Reported | Adult | 186 birds | Venice (beach) | Exposure Factor Datasets | Los Angeles |
Longevity | 13 | age of oldest banded breeding birds | yr | Not Reported | Adult | 40-105 birds/year | Venice (beach) | Exposure Factor Datasets | Los Angeles |
Survival/ Mortality | 0.88 | overall survival rate for adults that have returned to breed once | Not Reported | Adult | 82-165 breeding pairs/year | Venice (beach) | Exposure Factor Datasets | Los Angeles |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Time of Migration or Dispersal | late Apr | time of arrival at breeding grounds | Both Male and Female | Adult | 2 colonies | Sunset Aquatic Park, Huntington Beach; Santa Margarita Lagoon | Exposure Factor Datasets | Orange |
Clutches or Litters per year | 1 | normal number of broods per year | Both Male and Female | Adult | Not Reported | Sunset Aquatic Park, Huntington Beach; Santa Margarita Lagoon | Exposure Factor Datasets | Orange |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Fledging or Weaning Rate | 0.69 | statewide average annual fledging rate, 13 years | fledglings/pair | Not Reported | Fledgling | 832-1708 nesting pairs/year | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Territory Size | 40 | radius of nesting territory | cm | Both Male and Female | Adult | Not Reported | Huntington Beach State Park | Exposure Factor Datasets | Orange |
Western Grebe (Aechmophorus occidentalis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Dietary Composition | Ascaradina (3), Gastropoda (10, Orthoptera (2), Hemiptera (2), Diptera (1), Coleoptera (4), Siluridae (4), Centrarchidae (77), plant (4) | % of total stomach content volume | % | Not Reported | Adult | 27 birds | Clear Lake | Exposure Factor Datasets | Lake |
Food Ingestion Rate | 22.4 | estimated mass of fish consumed daily, based on stomach contents | g | Not Reported | Adult | 1 bird | Clear Lake | Exposure Factor Datasets | Lake |