Curiously, despite their similar beaks, these grosbeak bird species aren’t all related ... But in 2020, a one-of-a-kind rose-breasted grosbeak and scarlet tanager hybrid was documented in ...

The study of irruption behavior is difficult, because researchers are dealing with an event that happens irregularly.

the black-headed grosbeak. Joe LaFleur studied wildlife biology and communications at Colorado State University. He is author of the book Mountain Birds of Teller County and creator of “Better ...