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Bell's Vireo (Vireo bellii)

Citation:

Bell's Vireo (Vireo bellii)

Author(s)
Brown, Bryan T.
Pages
1-17
Publisher
The Academy of Natural Sciences; Philadelphia, PA: The American Ornithologists' Union, Washington, D.C.
Year
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type Countries
Time of Migration or Dispersal review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Dietary Composition review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Territory Size review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Age at Fledging, Metamorphosis, Weaning review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Time of Mating/ Laying review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Time of Molt review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Clutches or Litters per year review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Duration of Incubation or Gestation review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Clutch or Litter Size review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Fledging or Weaning Rate review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Hatching Success review Not Reported Not Reported Not Reported Exposure Factor Datasets MEXICO, USA
Citation:

Food habits of the vireos: a family of insectivorous birds

Author(s)
Chapin, Edward A.
Pages
1-41
Publisher
U.S. Department of Agriculture, Department Bulletin No. 1355
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Countries
Dietary Composition Hemiptera (34.43%), Orthoptera (18.52%), Lepidoptera (20.63%), Coleoptera (15.26%), Hymenoptera (6.44%), other insects and spiders (2.71%), vegetable food (0.7%) percent occurrence of food items in stomachs Not Reported Not Reported 52 stomachs Exposure Factor Datasets USA

Song Sparrow (Melospiza melodia)

Citation:

Bird nesting in Iowa no-tillage and tilled cropland

Author(s)
Basore, Nancy S., Louis B. Best, and James B. Wooley, Jr.
Pages
19-28
Year
Issue
1
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 4 (+/-4) mean nest densities in strip cover along fields nests/100 ha Both Male and Female Adult 35 fields Adair County Exposure Factor Datasets
Citation:

Song sparrows grow and shrink with age

Author(s)
Smith, James N. M., Peter Arcese, and Dolph Schluter
Pages
210-212
Year
Volume
103
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type Age-Specific Countries
Body Weight - Mean g Male Both Adults and Juveniles 11-37 birds Mandarte island Exposure Factor Datasets 9 - >90 wks CANADA
Body Weight - Mean g Female Both Adults and Juveniles 2-17 birds Mandarte island Exposure Factor Datasets 9 - >90 wks CANADA
Citation:

Population structure in salt marsh song sparrows Part II: Density, Age Structure, and Maintanance

Author(s)
Johnston, Richard F.
Pages
254-272
Year
Volume
58
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density 8-10 pairs/acre Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa
Clutch or Litter Size 3.14 eggs/nest Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa
Population Density pairs/100 acres Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa breeding
Clutch or Litter Size 8.2 eggs/pair/year Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa breeding
Longevity up to 7 years Both Male and Female Adult 6 animals (from 1000) San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa
Survival/ Mortality 80-85 1 year or younger % Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa
Citation:

Variation in breeding season and clutch size in song sparrows of the pacific coast

Author(s)
Richard F. Johnston
Pages
268-273
Year
Volume
56
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size oological collections eggs/nest Both Male and Female Adult 545 records from Baja California to Alaska Exposure Factor Datasets
Time of Mating/ Laying early Feb.-July Both Male and Female Adult Not Reported California to Washington Exposure Factor Datasets
Citation:

Brown-headed cowbirds and an island population of song sparrows: a 16-year study

Author(s)
Smith James N. M. and Peter Arcese
Pages
916-934
Year
Issue
4
Volume
96
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Countries
Hatching Success % Both Male and Female Adult 4733 eggs Mandarte Island Exposure Factor Datasets CANADA
Time of Mating/ Laying 24 Feb-19 April Both Male and Female Adult Not Reported Mandarte island Exposure Factor Datasets CANADA
Body Weight - Mean 3.12 median egg weight g Both Male and Female Adult 387 eggs Mandarte island Exposure Factor Datasets breeding CANADA
Citation:

Salt marsh song sparrow study

Author(s)
Jurek, R. M.
Publisher
California Department of Fish and Game, Special Wildlife Investigations
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Territory Size 9.1 territory width across sloughs m Both Male and Female Adult 64 sample areas Suisun Bay; San Francisco Bay; San Pablo Bay Exposure Factor Datasets Contra Costa breeding
Citation:

Environmental and endocrine control of reproduction in the song sparrow, Melospiza melodia. I. Temporal Organization of the breeding cycle

Author(s)
Wingfield, John C.
Pages
406-416
Year
Issue
3
Volume
56
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutches or Litters per year 2 clutches/year Both Male and Female Adult about 5 each Rockefeller University field research center Exposure Factor Datasets
Time of Molt 9 August-10 November includes prebasic molt Both Male and Female Not Reported about 10 Rockefeller University field research center Exposure Factor Datasets
Citation:

Reproductive success of grassland birds at east-central Illinois airports

Author(s)
Kershner, Eric L., and Eric K. Bollinger
Pages
358-366
Year
Volume
136
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Fledging or Weaning Rate 0.44 proportion of nests that fledged at least one young Both Male and Female Adult 4 nests airports in east-central IL Exposure Factor Datasets
Population Density 0.02 nest density nests/ha Both Male and Female Adult 4 nests airports in east-central IL Exposure Factor Datasets
Citation:

Determinants of lifetime reproductive success in the song sparrow

Author(s)
Smith, James N. M
Pages
154-172
Publisher
University of Chicago Press
Year
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Longevity 6 years Male Chick, Not Reported 2 males out of 51 male and female; 7 year study Mandarte island Exposure Factor Datasets CANADA
Clutch or Litter Size 11.1 numbers of eggs laid Female Adult 79 females Mandarte Island Exposure Factor Datasets CANADA 0.76
Clutch or Litter Size 10.1 number of eggs fertilized Female Adult, Both Adults and Juveniles 96 males Mandarte Island Exposure Factor Datasets CANADA 0.97
Clutches or Litters per year 2 clutches/year Both Male and Female Adult Not Reported Exposure Factor Datasets CANADA
Citation:

Effects of supplemental food on growth and adult size in the song sparrow

Author(s)
Smith, James N. M. and Peter Arcese
Pages
1416-1423
Year
Volume
19
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Age-Specific Countries Error
Clutch or Litter Size 2.41 brood size with supplemental food young/nest Not Reported Chick 34 nests Mandarte island Exposure Factor Datasets 6 d CANADA 0.17
Clutch or Litter Size 1.64 no supplemental food young/nest Not Reported Chick 44 nests Mandarte Island Exposure Factor Datasets 6 d CANADA 0.13
Survival/ Mortality 3.87 young raised to independence Not Reported Fledgling 34 nests Mandarte Island Exposure Factor Datasets CANADA 0.68 SE
Survival/ Mortality 0.98 young raised to independence young/pair Not Reported Chick 34 nests Mandarte Island Exposure Factor Datasets CANADA 0.17
Body Weight - Mean 16.69 with supplemental food at d 6 g Not Reported Chick 31 Exposure Factor Datasets 6 d CANADA
Body Weight - Mean 15.43 without suppl. food d 6 g Not Reported Chick 44 Exposure Factor Datasets 6 d CANADA
Body Weight - Mean with & without supplemental food g Female Adult 27 Exposure Factor Datasets 56-108 d CANADA
Body Weight - Mean with & without suppl. food Male Adult 23 Exposure Factor Datasets 56-108 d CANADA
Citation:

Stability, regulation, and the determination of abundance in an insular song sparrow population

Author(s)
Arcese, Peter, James N. M. Smith, Wesley M. Hochachka, Christopher M. Rogers, and Donald Ludwig
Pages
805-822
Year
Issue
3
Volume
73
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density 7.8 median density; 10 fold fluctuation over 15 yr period females/ha Female Not Reported 19 years Mandarte island Exposure Factor Datasets CANADA
Time of Mating/ Laying Mar-July Both Male and Female Not Reported 15 years Mandarte island Exposure Factor Datasets CANADA
Duration of Incubation or Gestation 13 for clutches with 1-5 eggs d Both Male and Female Not Reported 15 years Mandarte island Exposure Factor Datasets CANADA
Age at Fledging, Metamorphosis, Weaning d Both Male and Female Fledgling 15 years Mandarte island Exposure Factor Datasets CANADA
Citation:

Survival and mobility in a population of pacific coast song sparrows (Melospiza melodia gouldii)

Author(s)
Halliburton, Richard and Richard L. Mewaldt
Pages
499-504
Year
Issue
4
Volume
78
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Survival/ Mortality 45 annual survival rates of adult song sparrows at Point Reyes % Both Male and Female Adult 539 birds Point Reyes National Seashore Exposure Factor Datasets Marin
Survival/ Mortality 20 known minimum survival rates of juveniles; 1966-69 % Both Male and Female Juvenile nr Point Reyes National Seashore Exposure Factor Datasets Marin
Home Range 125 median m Male Adult nr Point Reyes National Seashore Exposure Factor Datasets Marin
Home Range 162 median m Female Adult nr Point Reyes National Seashore Exposure Factor Datasets Marin
Citation:

Determinants and consequences of nestling condition in song sparrows

Author(s)
Hochachka, Wesley, and James N. M. Smith
Pages
995-1008
Year
Issue
3
Volume
60
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Countries
Age at Fledging, Metamorphosis, Weaning 30 d Not Reported Fledgling Not Reported Mandarte island Exposure Factor Datasets CANADA
Clutches or Litters per year 2-3 broods/year Not Reported Adult Not Reported Mandarte island Exposure Factor Datasets CANADA
Citation:

Effects of population density and supplemental food on reproduction in song sparrows

Author(s)
Arcese, Peter and James N. M. Smith
Pages
119-136
Year
Volume
57
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Age at Fledging, Metamorphosis, Weaning 17 d Both Male and Female Fledgling 16 pairs with suppl. food Mandarte island Exposure Factor Datasets CANADA
Clutch or Litter Size 3.31 suppl. food eggs/clutch Both Male and Female Adult 16 pairs with suppl. food Mandarte island Exposure Factor Datasets CANADA 0.11 SE
Clutch or Litter Size 2.77 no suppl. food eggs/clutch Both Male and Female Adult 56 pairs without suppl. food Mandarte island Exposure Factor Datasets CANADA 0.15 SE
Body Weight - Mean 3.08 egg mass; no difference between fed and non-fed fenales g Female Adult 15 fed and 34 non-fed females Mandarte island Exposure Factor Datasets CANADA
Survival/ Mortality 83 suppl. food; fledgling surviving to independence % Both Male and Female Fledgling 13 pairs with suppl. food Mandarte island Exposure Factor Datasets CANADA
Survival/ Mortality 73 survival; no suppl. food; survival fledgling to independence % Both Male and Female Fledgling 29 pairs without suppl. food Mandarte island Exposure Factor Datasets CANADA
Body Weight - Mean 4.2 mean mass of nestlings 1 d old; no addtn. food g Not Reported Nestling 14 nestlings Mandarte island Exposure Factor Datasets CANADA 0.17 SE
Body Weight - Mean 15.55 mean mass of nestlings 6 d old; no suppl. food g Not Reported Nestling 60 nestlings Mandarte island Exposure Factor Datasets CANADA 0.31 SE
Body Weight - Mean 4.43 mean mass of nestlings with suppl. food 1 d old; g Not Reported Nestling 13 nestlings Mandarte island Exposure Factor Datasets CANADA 0.31 SE
Body Weight - Mean 16.81 mean mass of nestlings with suppl. food 6 d old g Not Reported Nestling 48 nestlings Mandarte island Exposure Factor Datasets CANADA 0.3 SE
Citation:
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Age-Specific Countries Error
Body Weight - Mean 24.75 over 90 wks g Female Adult 2 birds Mandarte Island Exposure Factor Datasets over 90 wks CANADA 2.1 SE
Citation:

Territory sizes of song sparrows, Melospiza melodia, in rural and suburban habitats

Author(s)
DeGraaf, Richard M.
Pages
43-47
Year
Volume
103
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Territory Size 0.21;0.26 rural; suburban ha Both Male and Female Adult 10 territories Amherst MA, 42 deg.22' N., 72 deg. 30' W Exposure Factor Datasets
Citation:

Postnuptial motl of the song sparrow on Mandarte Island in relation to breeding

Author(s)
Dhondt, Andre A. and James N. M. Smith
Pages
513-520
Year
Volume
58
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type Countries
Time of Molt June-September Both Male and Female Adult 69 Mandarte Island Exposure Factor Datasets CANADA
Citation:

Temporal spacing of broods, brood size, and parental care in song sparrows (Melospiza melodia)

Author(s)
Smith, James N. M. and Derek A. Roff
Pages
1007-1015
Year
Issue
6
Volume
58
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type Countries Error
Clutch or Litter Size 3.58; 3.42 Both Male and Female Adult 140; 89 Mandarte Island Exposure Factor Datasets CANADA 0.1; 0.19
Citation:

Growth and development of the thermoregulation in nestling San Miguel Island song sparrow

Author(s)
Sogge, Mark K., Michael D. Kern, Robert Kern and Charles Van Riper III
Pages
773-776
Year
Volume
93
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type Age-Specific
Body Weight - Mean see table 1 Not Reported Nestling 6-33 nestlings San Miguel Island Exposure Factor Datasets 0-11 days
Citation:

Effects of granular formulations of terbufos and fonofos applied to cornfields on mortality and reproductive success of songbirds

Author(s)
Knapton, Richard W., and Pierre Mineau
Pages
138-153
Year
Volume
4
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Clutch or Litter Size 4.22 mean clutch size of nests in control plots eggs/clutch Female Adult 32 nests southwestern Ontario Exposure Factor Datasets CANADA 0.94
Hatching Success 29.4% proportion of successful nests containing unhatched eggs % Both Male and Female Both Adults and Juveniles 32 nests southwestern Ontario Exposure Factor Datasets CANADA
Fledging or Weaning Rate 3.88 mean number of young fledged per successful nest fledglings/nest Both Male and Female Fledgling 32 nests southwestern Ontario Exposure Factor Datasets CANADA 1.22
Citation:

Settlement patterns, territory size, and breeding density in the song sparrow (Melospiza melodia)

Author(s)
Knapton, Richard W. and John R. Krebs
Pages
1413-1420
Year
Volume
52
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Territory Size 1745 mean territory size, measured by song playbacks and observations of border disputes m^2 Male Adult 6 birds Reifel Island, Delta, British Columbia Exposure Factor Datasets CANADA 406 SD
Territory Size 3956 mean territory size, measured by song playbacks and observations of border disputes m^2 Male Adult 6 birds Reifel Island, Delta, British Columbia Exposure Factor Datasets CANADA 611 SD
Citation:

Seed preferences and digestive efficiency of cardinals and song sparrows

Author(s)
Willson, Mary F., and Janet C. Harmeson
Pages
225-234
Year
Volume
75
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Lab
Food Ingestion Rate 412 (foxtail); or 468 (smartweed); or 85 (hemp); or 3943 (pigweed) estimated number of seeds per hour required at 0 degrees C for active individuals seeds/hour Not Reported Adult Not Reported Exposure Factor Datasets active Laboratory
Citation:

Population estimates of breeding birds in North Dakota

Author(s)
Stewart, Robert E., and Harold A. Kantrud
Pages
766-788
Year
Volume
89
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 1.69 (40) mean density of breeding birds (maximum density in parentheses) pairs/square mile Both Male and Female Adult 130 sample units (160 acres/unit) Exposure Factor Datasets

Song Sparrow (Melospiza melodia), Suisun Song Sparrow (Melospiza melodia ssp. maxillaris), San Pablo Song Sparrow (Melospiza melodia ssp. samuelis)

Citation:

San Francisco Bay Region Salt Marsh Song Sparrow Survey, 1974

Author(s)
Walton, Brian James
Pages
19
Publisher
California Fish and Game, Special Wildlife Investigations
Year
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density see table 1 Both Male and Female Adult 64 sites San Francisco Bay region Exposure Factor Datasets Alameda, Contra Costa breeding

Western Meadowlark (Sturnella neglecta)

Citation:

Prey choice by three insectivorous grassland birds: Reevaluating opportunism

Author(s)
Kaspari, Michael and Anthony Joern
Pages
414-430
Year
Volume
68
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Acridid, adult Coleoptera, Tettigoniid, larval Lepidoptera, Hymenoptera, Other, Hemipteran, spider percent of arthropod taxa in the diet, listed in order of decreasing frequency Not Reported Adult 95 birds Arapaho Prairie Exposure Factor Datasets
Citation:

Repertoires, territory size and mate attraction in western meadowlarks

Author(s)
Aweida, Maria Klemperer
Pages
1080-1083
Year
Volume
97
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Territory Size 12,406.8 average territory size in mated birds m^2 Male Adult 17 birds Boulder Exposure Factor Datasets
Territory Size 3,228.1 average territory size of unmated birds m^2 Male Adult 7 birds Boulder Exposure Factor Datasets
Citation:

Meadowlarks feeding on roadkills

Author(s)
Hubbard, John P. and Claudia L. Hubbard
Pages
107-108
Year
Issue
1
Volume
81
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition mourning dove item found in stomach analysis Not Reported Not Reported 1 bird New Mexico State Hwy 26 Exposure Factor Datasets
Citation:

Effects of two sagebrush control methods on nongame birds

Author(s)
Castrale, John S.
Pages
945-952
Year
Issue
4
Volume
46
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of mean breeding bird densities on three grassland-sagebrush sites (over two years) territories/16 ha Both Male and Female Adult 3 sites Wasatch National Forest Exposure Factor Datasets
Citation:

Specific limits and distribution of meadowlarks of the desert grassland

Author(s)
Lanyon, Wesley E.
Pages
183-207
Year
Volume
79
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Body Weight - Mean 101.5 mean body weight g Male Adult 8 birds Exposure Factor Datasets MEXICO
Body Weight - Mean 75.9 mean body weight g Female Adult 3 birds Exposure Factor Datasets MEXICO
Citation:

Opportunistic scavenging by meadowlarks in southwestern Oklahoma

Author(s)
Tyler, Jack D. and Larry L. Choate
Pages
41-42
Year
Volume
70
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Sturnella sp., Colaptes, sparrows, Lepus californicus, Sigmodon hispidus, Sylvilagus sp., Felis domesticus species observed to be scavenged by meadowlarks Not Reported Adult Not Reported Exposure Factor Datasets
Citation:

Bird nesting in Iowa no-tillage and tilled cropland

Author(s)
Basore, Nancy S., Louis B. Best, and James B. Wooley, Jr.
Pages
19-28
Year
Issue
1
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 0 to 12 (+/-15) mean nest densities in untilled corn or soybean fields nests/100 ha Both Male and Female Adult 8-9 fields Adair County Exposure Factor Datasets
Citation:

A determination of the economic status of the western meadowlark (Sturnella neglecta) in California

Author(s)
Bryant, Harold C.
Pages
377-510
Year
Issue
14
Volume
11
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density birds/acre Not Reported Not Reported 23-67 birds counted Los Banos, Merced Exposure Factor Datasets Merced
Time of Nesting Mar-Aug length of nesting period Both Male and Female Adult Not Reported Exposure Factor Datasets
Clutches or Litters per year 2 usual number of nesting attempts per year nests/yr Female Adult Not Reported Exposure Factor Datasets
Clutch or Litter Size 5 usual number of eggs laid eggs/clutch Female Adult Not Reported Exposure Factor Datasets
Hatching Success 3 estimated average brood size young/clutch Not Reported Juvenile Not Reported Exposure Factor Datasets
Duration of Incubation or Gestation observed range of incubation periods d Not Reported Embryo Not Reported Exposure Factor Datasets
Time of Fledging or Metamorphosis observed number of days chicks spent in nest d Not Reported Fledgling Not Reported Exposure Factor Datasets
Growth Rate 7 average increase in body weight g/d Not Reported Nestling 2 nests Exposure Factor Datasets
Body Weight - Mean 4.00 body weight of average adult oz Not Reported Adult Not Reported Exposure Factor Datasets
Body Weight - Mean 0.25 body weight of day-old nestling oz Not Reported Nestling 2 nests Exposure Factor Datasets
Dietary Composition grain (30.8), weed seed (5.3), miscell. vegetable (0.6), Coleoptera (21.3), Orthoptera (20.3), Lepidoptera (12.2), Hemiptera (1.7), Hymenoptera (5.6), Diptera (0.1), Arachnida (0.2), miscell. insects (1.9) percent contribution to the diet by volume, based on stomach content analyses % Not Reported Not Reported ~2,000 stomachs Exposure Factor Datasets
Citation:

Effects of female pairing status and timing of breeding on nesting productivity in western meadowlarks (Sturnella neglecta)

Author(s)
Dickinson, T.E., J.B. Falls, and J. Kopachena
Pages
3093-3101
Year
Volume
65
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Time of Nesting first two weeks of May peak time of nest initiation Both Male and Female Adult 46 nests near Delta, Manitoba Exposure Factor Datasets CANADA
Clutch or Litter Size 5.41 mean size of clutches laid early (pre-May 1), mid (May 1-10), or late season (post-May 10) eggs/clutch Female Adult 41 nests near Delta, Manitoba Exposure Factor Datasets CANADA 0.14 SE
Hatching Success 19/31 proportion of successful nests (hatched at least one egg) in which entire clutch hatched Both Male and Female Adult 41 nests near Delta, Manitoba Exposure Factor Datasets CANADA
Fledging or Weaning Rate 2.32 number of young fledged per female young/female Female Adult 38 females near Delta, Manitoba Exposure Factor Datasets CANADA 0.06 SE
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