资讯

来自MSN9 个月
5 Birds That Lay Eggs in Other Birds’ Nests
Because cowbird offspring incubate quickly ... they simply allow their eggs to peacefully incubate with the host’s eggs. Furthermore, black-headed duck offspring do not prey upon the host ...
esa.org5 年
STUDENT INSTRUCTIONS
The Brown-headed cowbird is one of two cowbird species in North America. Both species are brood parasites - they lay their eggs in the nests of other birds. Brown-headed cowbirds are native to ...
National Geographic news3 年
Brown-Headed Cowbird
The male’s combination of glossy black body and brown head is diagnostic. The female is extremely similar to the vagrant shiny cowbird female. However, the brown-headed is paler overall ...
Nature6 年
The Ecology of Avian Brood Parasitism
Ornithological Science 4, 55–64 (2005). Klippenstine, D. R. & Sealy, S. G. Differential ejection of cowbird eggs and non-mimetic eggs by grassland passerines. Wilson Journal of Ornithology 120 ...