allaboutbirds.org

wor6M TIL that penguins can drink saltwater thanks to a special gland near their eyes that filters out the salt. This allows them to survive in ocean environments without access to fresh water.
698DX TIL the Brown-headed Cowbird is North America’s most common “brood parasite,” laying eggs in the nests of over 140 host species
ZpKKo TIL: All birds have extra eyelids