Raising baby birds is a lot of work. You might think that after seeing off their fledged young ones, bird parents would call it a day. But a surprising number of species start again and raise another set of young in the same breeding season — what’s called double brooding. Some birds squeeze in even more broods each year. Mourning Doves have been seen trying to raise six clutches of eggs in one season!

More info and transcript at BirdNote.org. 

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