California warblers Flashcards
Where does O. c. celata range?
Breeds Alaska and NW Canada (E. to Quebec) and winters in mainly SE USA, also to S and E Mexico and Guatemala
Where does O. c. orestera range?
W Canada and S in Rockies to SW USA, migrated to C Mexico
Where does O.c. lutescens range?
N British Columbia and S in W USA to C California, winters mainly SW USA (AZ and NM) and W Mexico
Where does O. c. sórdida range?
coastal S California and extreme NW Mexico (N. Baja California), including offshore islands
Where does the Orange-crowned Warbler breed?
Open deciduous or mixed woodlands, tall shrubby areas, riparian scrub, and brushy thickets. Sórdida breeds also in low scrub on offshore islands, and lutescens also in chaparral.
Where does the Orange-crowned Warbler winter?
Open woodland with brushy understory, oak, thickets, hedges, parks, and gardens. W populations also in chaparral and desert scrub such as saltbrush and mesquite.
What does the Orange-crowned Warbler eat?
Insects and other invertebrates, like spiders, in summer; also takes fruit and berries in the winter. Also hummingbird feeders.
Forages low to mid-levels, gleaning insects from leaves and probing dead-leaf clusters. Generally more territorial than Tennessee Warbler.
When is the Orange-crowned Warbler breeding season?
April-July, sórdida as early as late March
What is the Orange-crowned Warbler nest like?
A cup of grasses, bark shreds, and mosses, lined with fine grasses, hair, and feathers
Placed on the ground, sometimes low in bush (especially Island-breeding sórdida and occasionally orestera in Az)
How many eggs in a clutch in Orange-crowned Warbler?
3-6, usually 4-5
How long is Orange-crowned Warbler incubation period? Nestling period?
12-14 days
8-10 days
Are Orange-crowned Warblers parasitized by Brown-headed Cowbirds?
Rarely
When does O. c. lutescens arrive and leave the breeding grounds?
Arrives from late March (NW USA) and early May (Alaska) and leaves from late July or earlier, with autumn migration quite protracted
When does O. C. orestera arrive and leave the breeding grounds?
Arrive late April and leave August
When does O. c. celata arrive and leave breeding grounds?
Begins migration late March and arrives mid-May and leaves later September
