Q. What happens to the poops that baby birds make in the birdhouse or nest?
A. Many parent birds keep the nest clean by carrying out each poop, which is neatly packaged in a mucous membrane called a fecal sac. Some parents then carry the sac away from the nest area, while other parents eat it.
In some bird species, the nestlings just poop along the edges, which makes quite a mess by the time they leave the nest.