Ospreys are specially designed birds for catching fish. Their powerful legs and sharp talons help them grab fish when they dive into the water. But when they catch a big fish, they have to work really hard to get it out of the water. Did you know that ospreys are the best birds for catching fish? Their powerful legs and sharp talons help them catch fish in the water. Also, their eyes can see underwater, which helps them find their prey. Ospreys help keep the water ecosystem balanced by catching fish, which helps keep the water clean.