Neighboring groups of birds within the same species can create very different-looking nests — showing that their nest-building choices aren't solely controlled by instinct and the environment. Instead ...
Use physical barriers like mesh, wire, or by sealing holes and cracks to prevent birds from building nests in unwanted spots.
Protect local avians by keeping these materials out of your yard.
A white-browed sparrow weaver inspects a roost under construction, after just receiving some grass brought by another member of its group. (Maria Cristina Tello-Ramos) Neighboring groups of birds ...