Nests are usually well camouflaged and often go undetected. Carefully check for nests before you trim trees, hedges and bushes. Whenever possible, avoid removing trees and shrubs in spring and summer, the prime nesting seasons. Wait until fall when the nests are no longer in use. If you hire a tree service or landscaper, ask that they take these same precautions.
Some birds form a hollow or use a pre-existing hollow in a tree for a home.
Such cavity nesters, like screech owls and woodpeckers, could be inhabiting what appears to be an unoccupied tree. Every spring we receive calls from people concerned about birds nesting in peculiar places around their homes, such as in hanging plants or exhaust vents. Some birds will nest anywhere there is an opportunity, and a sheltered nook of your house may seem to them like a perfect spot to raise their family. If birds have taken up residence in a safe location around your home, make sure they stay free from disturbance, avoid activity near their nest and keep your cat indoors. If the birds pose a minor inconvenience, be patient, they will soon leave of their own accord.