If bird nests interest you, a recommended book is “A Guide to the Nests, Eggs, and Nestlings of North American Birds,” second edition, Paul J. Baicich and Colin J.O. Harrison, Academic Press ...

Birds nests can be incredible structures. Take for example the sociable weaver (Philetairus socius), which builds gigantic nests within nests, large enough to house hundreds of breeding pairs, and ...