The early bird keeps the nest hollow

see www.sciencedaily.com/releases/2016/06/160622101939.htm

Interspecific competition for nests: Prior ownership trumps resource holding potential for Mountain Bluebird competing with Tree Swallow

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drones for birders

I’ve never been much good at photography, much too fiddly. However, I’ve just been looking at drones as a way of obviating the need for scrambling over rough ground , slugging away through heavy sand or mangroves, or even going to sea on a pelagic trip. I’m getting too old for all that stuff. But . . . → Read More: drones for birders