following up on an answer to this question, that says that the requirement applies to birds you find "in the wild".
A person has a tree that has its trunk on his property. Some of the tree branches hang over into the public sidewalk. The town law states that home owners must trim the lower branches of all trees that interfere with people walking in the street, (I mention this as it may influence the answer in terms of what may be considered "public" for the situation.)
Suppose, a bird builds a nest on one of these branches that hang over into the public domain. Assuming that I want the eggs or chicks, do I have to chase the bird away prior to taking the eggs of chicks, and then cut the branches per town law? Or, are those branches and the nest considered my property and not "in the wild", thus exempting me from the requirement to chase?