Species: Sturnella neglecta
Western Meadowlark
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Aves
Order
Passeriformes
Family
Icteridae
Genus
Sturnella
NatureServe
Classification
Other Global Common Names
Pradero Occidental - sturnelle de l'Ouest
Informal Taxonomy
Animals, Vertebrates - Birds - Perching Birds
Formal Taxonomy
Animalia - Craniata - Aves - Passeriformes - Icteridae - Sturnella - be retained as the proper name.
Ecology and Life History
Short General Description
A bird (meadowlark).
Migration
true - true - true - Home range size has been estimated at 4-13 hectares (Bent 1958). In Colorado, mean territory size of 17 mated males was 1.24 hectares, 0.32 hectares in 7 unmated males (Aweida 1995). Estimates of male territory size are 3-13 hectares within tallgrass prairie (Kendeigh 1941, Lanyon 1956, Laubach 1984), 2-7 hectares within short- and mixed-grass prairies (Wiens 1970, 1971; Schaeff and Picman 1988), 2 hectares in tame pastures in Wisconsin (Wiens 1969), and 3 hectares in alfalfa fields and surrounding edges in Iowa (Frawley and Best 1991). In idle shrubsteppe and shrubsteppe pasture, the estimated territory sizes for males were 2.2 hectares and 2.3 hectares, respectively (Wiens 1971). Breeding home range size is essentially same as territory size (Lanyon 1957).
Non-migrant
true
Locally Migrant
true
Food Comments
Diet varies seasonally and includes small invertebrates (beetles, cutworms, caterpillars, grasshoppers, spiders, sow bugs, snails, etc.), grain, and seeds. (Terres 1980). Meadowlarks usually forage on the ground.
Reproduction Comments
In the north (Manitoba), nests are initiated in late April-June (mainly first half of May). Clutch size is three to seven (usually five). Incubation, by female, lasts 13-15 days. Nestlings are tended by both parents, leave nest in about 12 days, fed by parents for two more weeks.
Ecology Comments
This species occurs in flocks of up to 10-75 birds in winter.<br><br>Predators include: hawks, crows, skunks, weasels, raccoons, and coyotes.<br><br>This species is regarded as an intolerant host of the brown-headed cowbird (<i>Molothrus ater</i>) in some areas and is known to eject the eggs of this parasitic species (Hergenrader 1962). Brood parasitism rates of more than 40 percent, however, have been recorded (Davis 1994; Klute 1994; Koford et al., in press), although other studies have recorded lower parasitism rates (Hergenrader 1962, Friedmann 1963, Bent 1958, Maher 1973, Hill 1976). In Manitoba, a relatively high brood parasitism rate of 44 percent on 65 nests was recorded (Davis 1994; Davis and Sealy 2000). Within native grasslands in North Dakota, frequency of brood parasitism on 294 nests was 47 percent; within Conservation Reserve Program (CRP) and dense nesting cover (DNC) grasslands, the frequency of brood parasitism on 26 nests was 19 percent (Koford et al., in press). Within annually burned and moderately grazed tallgrass pastures in Kansas, the brood parasitism rate for 6 nests was 83 percent (Klute 1994).
Length
24
Weight
106
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
2009-03-23
Global Status Last Changed
1996-12-04
Other Status
LC - Least concern
Distribution
Conservation Status Map
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Global Range
H - >2,500,000 square km (greater than 1,000,000 square miles) - H - Breeding range extends from central British Columbia, northernl Alberta, central Saskatchewan, southern Manitoba, western Ontario, northeastern Minnesota, northern Wisconsin, northern Michigan, and southern Ontario south to northwestern Baja California, southern California, northwestern Sonora, central Arizona, Mexican highlands (to Jalisco, Guanajuato, San Luis Potosí, Nuevo León, and western Tamaulipas), west-central Texas, southeastern Kansas, northwestern Missouri, central Illinois, northern Indiana, northwestern Ohio, and extreme northwestern New York (Davis and Lanyon 2008).<br><br>Winter range extends primarily from southern British Columbia, central Idaho, central Utah, central Colorado, southern South Dakota, southern Wisconsin, and northern Indiana south to southern Baja California, Michoacán, the state of México, Veracruz, and U.S. Gulf Coast east to northwestern (Davis and Lanyon 2008). <br><br>Introduced and established in Hawaii (Kauai) (AOU 1998, Davis and Lanyon 2008).
Global Range Code
H
Global Range Description
>2,500,000 square km (greater than 1,000,000 square miles)

