Jenjang dan burung perancah (Cranes & Waders)
Wilson's Phalarope
Phalaropus tricolor
- tidak umum
- 40 km/h
- Risiko rendah
Females are the brighter sex and abandon the males to do all the parenting. Role-reversed and shameless.
- Populasi
- ~1,500,000 mature individuals; global trend suspected stable (a small ~6% increase over three generations, though confidence is wide)
- Habitat
- Prairie wetlands, shallow alkaline/saline lakes, and marshes during breeding; hypersaline lakes (e.g. Mono Lake, Great Salt Lake, Salton Sea) and coastal lagoons during migration and winter
- Fakta menarik
- Wilson's Phalarope shows reversed sex roles: the more brightly colored females compete for mates and territory, then leave incubation and chick-rearing entirely to the males.
- Sebaran
- Breeds across western North America (northern Great Plains and Great Basin into southern/western Canada); migrates through Central America to winter primarily on high-altitude saline lakes in the Andes of Peru, Bolivia, Chile, and Argentina; rare vagrant to western Europe
- Makanan
- Small aquatic insects and crustaceans (brine flies, brine shrimp), picked from the water surface, often while spinning in tight circles to stir up prey; can double body weight at staging salt lakes before migration
- Ukuran
- 0,23 m
- Bentang sayap
- 0,37 m
- Masa hidup
- 5 tahun
