Osprey (Pandion haliaetus)
Ospreys are such pretty birds. Gaze upon their majesty:
Their outer toe is reversible, so they can switch from a standard anisodactyl arrangement to a zygodactyl one. Their diet is like 99% fish and 1% “oh my god I accidentally ate a bug.” They can eat other stuff, but they really don’t if they can at all help it. They make huge sloppy eagle-nests and have a penchant for doing so in man-made nest-boxes on top of power lines.
Power lines: They’re like trees, except raccoons and possums and feral cats can’t climb them nearly as easily.
To be honest, they’ll also just build them right up in there with power lines, so the nest-box isn’t a necessary thing. It’s what power companies started putting up to keep the ospreys from killing power to the greater global tri-county area every weekend.
They weigh about five pounds and have a wingspan of about six feet, which isn’t huuuuuuge for an eagle but is pretty damn big. They display high mate-fidelity, and they usually raise two chicks per season.