Still More Questions July 24, 2006
Concerning Martha. Someone noted that eagle densities are very high in the Chesapeake area as is food but available territories are limited. This will increase intraspecific competition and lead to injuries and death of some birds. We observed a similar occurrence on Verona Island (near Bucksport) several years ago. The resident male had a blue wing tag (from MA) and one spring three adults showed up at the territory; by nesting time Mr. Blue had dissappeared not to be seen again.
Can adults recognize young from previous years? We doubt it as these birds have undergone multiple molts. I think the only reason the sub-adult was able to approach the nest site recently was that the nestlings had fledged and the adults were not present.
Little getting enough food. We don't need to worry about "Little" anymore; "he" is fine. There is no indication that male fledglings are tended by the male parent, females by the female adult. Doesn't make any long term sense.
Bones etc. I think Mark commented earlier that birds of prey, including eagles, regurgitate pellets composed of undigestible materials such as fur, feathers and bones. When doing food habits' studies we collect these pellets and analyze their contents.
That's all for now. Bucky Owen