Happy Mother's Day, from the whole BirdNote team! Avian motherhood is a mixed bag. Peregrine Falcon mothers share duties fairly equally with Peregrine dads. At the other end of the spectrum is the female hummingbird, which usually carries the entire burden of nesting, incubating, and…

The male hummingbird leaves the female to build the nest and raise the young alone, but other father birds are more involved. A Peregrine Falcon father shares duties almost evenly with the mother. (Stewart, seen here, nested on a Seattle skyscraper for many years.) But the male Emu of…