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| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | 1.87 | average number of chicks fledged per successful brood | chicks/brood | Female | Adult | Great Salt Lake, Davis County | 3 yrs data collection | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 2.55 | mean clutch size | 0.69 SD | 1-3 | eggs/clutch | Female | Adult | Baja California peninsula | 36 nests | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 71.1 | body weight of an individual bird | g | Not Reported | Adult | 1 bird | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Territory Size | nesting territory size | 0.2-1.6 | ha | Both Male and Female | Adult | Gibraltar Reservoir | 43-48 pairs (2 yrs) | Exposure Factor Datasets | |
| Population Density | range of nesting density over two years | 43-48 | pairs/243 ha | Both Male and Female | Adult | Gibraltar Reservoir | 43-48 pairs (2 yrs) | Exposure Factor Datasets | |
| Fledging or Weaning Rate | percent of nesting pairs that successfully raised at least one young (range over two years) | 26-32 | % | Both Male and Female | Adult | Gibraltar Reservoir | 43-48 pairs (2 yrs) | Exposure Factor Datasets | |
| Hatching Success | range in proportions of total eggs hatching vs. total eggs laid (for two years) | 147/238 to 147/262 | eggs hatched/eggs produced | Not Reported | Hatchling | Gibraltar Reservoir | 238-262 eggs (two yrs) | Exposure Factor Datasets | |
| Fledging or Weaning Rate | range in proportions of total chicks fledging vs. total chicks hatched (for two years) | 85/147 - 91/147 | chicks fledged/chicks hatched | Not Reported | Fledgling | Gibraltar Reservoir | 147 eggs hatched (2 yrs) | Exposure Factor Datasets | |
| Clutches or Litters per year | annual clutch numbers per pair observed over 2 years | 1-2 | clutches/yr | Both Male and Female | Adult | Gibraltar Reservoir | 43-48 pairs (2 yrs) | Exposure Factor Datasets | |
| Foraging Distance | up to several hundred yards | maximum observed distance travelled by birds from the nest | Both Male and Female | Adult | Gibraltar Reservoir | 32 pairs (1 yr) | Exposure Factor Datasets | ||
| Time of Migration or Dispersal | mid Jul to early Sep | period of departure from the breeding area by migrants | Both Male and Female | Both Adults and Juveniles | Gibraltar Reservoir | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | 63 | percent of birds that successfully fledged one young | % | Male | Adult | Gibraltar Reservoir | 98 birds | Exposure Factor Datasets |
| Fledging or Weaning Rate | 66 | percent of birds that successfully fledged one young | % | Female | Adult | Gibraltar Reservoir | 98 birds | Exposure Factor Datasets |
| Survival/ Mortality | 48/312 | proportion of young banded as nestlings or fledglings returning to study area in subsequent yrs | birds returning/birds banded | Both Male and Female | Juvenile | Gibraltar Reservoir | 312 birds | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| Population Density | review | historical and recent population data | Not Reported | Adult | Not Reported | Exposure Factor Datasets |
| Fledging or Weaning Rate | review | reproductive success data | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | number of singing males per linear km of suitable habitat | 3-5 | birds/km | Male | Adult | various CA locations | 8 survey sites | Exposure Factor Datasets | |
| Fledging or Weaning Rate | 21 | percent of active nests that fledged at least one young | % | Both Male and Female | Adult | various CA locations | 14 nests | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | approx. 15 | incubation period up to time of pipping | 14d, 21 hr - 15 d, 8 hr | d | Not Reported | Embryo | 8 eggs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Hatching Success | 84 | percent of eggs hatched of total number laid | % | Not Reported | Hatchling | upper Santa Cruz River | 24 nests, 70 eggs | Exposure Factor Datasets |
| Fledging or Weaning Rate | 59.9 | percent of eggs producing fledglings of total eggs laid | % | Not Reported | Hatchling | upper Santa Cruz River | 24 nests, 70 eggs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Longevity | 6 -11 | age of oldest identified banded individual | yr-mo | Not Reported | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 14 d, 16 hr to 15 d | incubation period up to time of hatching | Not Reported | Embryo | 1 egg | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Longevity | 12-6 | age of oldest identified banded individual | yr-mo | Not Reported | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | range of monthly density estimates over 2 yrs | 0.44 - 3.7 | #/ha | Not Reported | Not Reported | Indian Cove, Joshua Tree National Monument | Not Reported | Exposure Factor Datasets | |
| Home Range | 155 | cumulative home range diameter for 6-8 mo period | m | Both Male and Female | Not Reported | Indian Cove, Joshua Tree National Monument | 34 | Exposure Factor Datasets | |
| Body Weight - Mean | see citation | figure of seasonal changes in weight | g | Both Male and Female | Both Adults and Juveniles | Indian Cove, Joshua Tree National Monument | Not Reported | Exposure Factor Datasets | |
| Longevity | longest recorded longevity | 21 - 23 | mo | Not Reported | Adult | Indian Cove, Joshua Tree National Monument | 2 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 0.49 | annual composite home range estimated by principal component method (95% probability) | ha | Not Reported | Not Reported | Warm Springs Valley, Washoe County | 718 recapture loci | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | 4.0 (0); 10.0 (2 wks); 18.0 (4 wks); 24.0 (6 wks); 28.0 (8 wks); 31.0 (10 wks); 34.0 (12 wks); 36.0 (14 wks) | body weights at various ages (0 - 14 wks) | g | Not Reported | Juvenile | 3 | Exposure Factor Datasets | ||
| Body Weight - Mean | range of seasonal body weights | 39.5 - 46.5 | g | Male | Adult | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 644 | Exposure Factor Datasets | |
| Clutch or Litter Size | 2.02 | 1 - 3 | embryos/female | Female | Adult | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 133 | Exposure Factor Datasets | |
| Home Range | 0.466 | average range; estimated as enclosed space occupied by used traps plus one-half distance to closest unused trap | acres | Male | Adult | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 11 | Exposure Factor Datasets | |
| Home Range | 0.373 | average range; estimated as enclosed space occupied by used traps plus one-half distance to closest unused trap | acres | Female | Adult | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 13 | Exposure Factor Datasets | |
| Home Range | 0.243 | average range; estimated as enclosed space occupied by used traps plus one-half distance to closest unused trap | acres | Both Male and Female | Juvenile | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 14 | Exposure Factor Datasets | |
| Body Weight - Mean | range of seasonal body weights | 36.5 - 43.8 | g | Female | Adult | Santa Rita Experimental Range, Tucson (elev., 3000 - 4500 ft) | 482 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Population Density | range in monthly density estimates over 2 yrs | 0.73 - 1.74 | #/ha | Not Reported | Not Reported | Indian Cove, Joshua Tree National Monument | Not Reported | Exposure Factor Datasets |
| Body Weight - Mean | range of annual weight means for 2 yrs | 8.1 - 8.8 | g | Both Male and Female | Adult | Indian Cove, Joshua Tree National Monument | 31 - 65/yr | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 0.33 | annual composite home range estimated by principal component method (95% probability) | ha | Not Reported | Not Reported | Warm Springs Valley, Washoe County | 394 recapture loci | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 1.42 | annual composite home range estimated by principal component method (95% probability) | ha | Not Reported | Not Reported | Warm Springs Valley, Washoe County | 509 recapture loci | Exposure Factor Datasets |
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