Fish may remain over reeds, but interactions between fish stop. Large masses of sticks in the tops of tall, broken topped trees along the coastline are often the obvious nests made by bald eagles. You may spot other nests as well. Avoid nests and never handle eggs or young. Do not handle baby birds.
People often find young fledgling birds that have just left the nest.
Leave injured birds where you find them. These birds seldom survive in captivity. Use binoculars or a spotting scope to avoid disturbing birds. Be aware of the bird's behavior and watch for clues that you might be disrupting normal behavior. Raised head, looking at observers.