Species: Coccothraustes vespertinus

Evening Grosbeak

Species

Birds

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Terrestrial vertebrates: birds

Encyclopedia of Puget Sound

(NGS 1983).

Classification

Kingdom

Animalia

Phylum

Craniata

Class

Aves

Order

Passeriformes

Family

Fringillidae

Genus

Coccothraustes

NatureServe

Source:
ELEMENT_GLOBAL.2.102678

Classification

Other Global Common Names

Picogrueso Norteño - gros-bec errant

Informal Taxonomy

Animals, Vertebrates - Birds - Perching Birds

Formal Taxonomy

Animalia - Craniata - Aves - Passeriformes - Fringillidae - Coccothraustes - Often placed in the genus HESPERIPHONA (AOU 1998). See Prescott (1994) for information on geographical variation in body size.

Ecology and Life History

(NGS 1983).

Migration

true - true - true - Irruptive migrant. Flocks move irregularly eastward and southward, beyond regular range, in years when population is high or seed food crop is low (Terres 1980). In eastern North America, males generally winter farther north than do females (Prescott 1991).

Non-migrant

true

Locally Migrant

true

Food Comments

Most of its diet consists buds and seeds of deciduous trees and shrubs and conifers. During the summer also eats some insects.

Reproduction Comments

In Colorado, most nest are initiated in late May or early June (Scott and Bekoff 1991). Clutch size 2-5 (usually 3-4). Incubation about 12-14 days, by female (male provides most of female's food during incubation). Young tended by both adults, leave nest at 13-14 days (Terres 1980, Bekoff et al. 1987, Scott and Bekoff 1991). Typically monogamous in Colorado (Scott and Bekoff 1991).

Ecology Comments

Gregarious. Travels and forages in flocks througout much of the year.

Length

Weight

Conservation Status

NatureServe Global Status Rank

Global Status Last Reviewed

1996-12-04

Global Status Last Changed

1996-12-04

Distribution

Conservation Status Map

Global Range

H - >2,500,000 square km (greater than 1,000,000 square miles) - H - BREEDS: British Columbia, northern Alberta, central Saskatchewan, across southern Canada to Nova Scotia, south in mountains to central California and Veracruz, Mexico; in East to Minnesota, northern New York, Massachusetts. WINTERS: throughout breeding range; irregularly to Gulf Coast and central Florida.

Global Range Code

Global Range Description

>2,500,000 square km (greater than 1,000,000 square miles)

ELEMENT_GLOBAL.2.102678