Burung kicau (Songbirds)
Bay-breasted Warbler
Setophaga castanea
- epik
- 72 km/h
- Risiko rendah
Chestnut flanks and a quiet song high in the spruces. Population rises and falls with the budworm.
- Populasi
- ~9.9 million mature individuals, increasing (~24% increase over the past decade after a small historical decline 1970-2017)
- Habitat
- Breeds in boreal spruce-fir coniferous forest across Canada and the northeastern US; winters in wet lowland and moist tropical forest, foraging low in dense foliage
- Fakta menarik
- Bay-breasted Warbler populations boom and crash with spruce budworm outbreaks — during infestations the birds gorge on the larvae and can raise unusually large broods, making them one of the few songbirds whose numbers track an insect pest almost one-to-one.
- Sebaran
- Breeds across eastern and central Canada and the northeastern United States; migrates through the Great Lakes region and Appalachians/Atlantic coast; winters in Central America, the Caribbean, and northern South America (Colombia to Venezuela) — distributed across ~28 countries/territories
- Makanan
- Insectivorous in the breeding season, with a strong preference for spruce budworm larvae (a key population driver); shifts to a diet dominated by fruit on tropical wintering grounds, often in mixed-species foraging flocks
- Ukuran
- 0,14 m
- Bentang sayap
- 0,23 m
- Masa hidup
- 4 tahun
