Papa Carl, also known as "The Old Aeronaut," sent us these pics of a very impressive Osprey's Nest on a neighbor's waterfront property here in Annapolis. This is really one amazing bit of construction!
Since we know a bit about birds, friends and family are always asking us questions when they see a bird nest or interesting bird behavior. We don't always have the answers, but it keeps us on our toes and keeps us learning.
I decided to consult The Sibley Guide to Bird Life & Behavior to learn a little bit more about raptor nests.
Sibley says that raptors line their nests with softer material to provide insulation and cushioning for the eggs. "Bald Eagles and Ospreys sometimes use a lining of seaweed," it says. Didn't know that.
Pairs of raptors often have alternate nests within their territory, and they will switch nests occasionally, especially in a year after brood failure or a parasite infestation, Sibley says. Didn't know that either.
"Ospreys are quite versatile and will use a variety of tall structures, inclusing cacti, rock towers, and, increasingly, nest platforms built by humans." We knew that. Well, not the cacti part.