First Evidence For A Second Breeding Season Among Migratory Songbirds

[Staff]

First Evidence For A Second Breeding Season Among Migratory Songbirds
ScienceDaily (Oct. 28, 2009)

First Evidence For A Second Breeding Season Among Migratory Songbirds
excerpts from above:

Biologists for the first time have documented a second breeding season during the annual cycle of five songbird species that spend summers in temperate North America and winters in tropical Central and South America...

...the researchers found individuals from five species -- yellow-billed cuckoos, orchard orioles, hooded orioles, yellow-breasted chats and Cassin's vireos -- that were breeding rather than molting.