Re: [Maine-birds] Maine Bird Atlas - Weekly Challenges, 7/26

Doug,

Thanks for sending the tips and inspirational challenges for the Maine Bird Atlas. I could use a little clarification on one of them. I apologize if I've missed a reference for this.

You wrote:
'A good example is coding an occupied nest when "observing an adult occupying, leaving, or entering a probable nest site (visible or not) and whose behavior suggests the presence of an occupied nest."'

What swift behaviors, beyond entering or leaving a chimney, would suggest the presence of a nest? I've been coding the in-and-out birds as N (visiting probable nest site), because I haven't thought that represents "circumstances strongly indicating" an occupied nest (N).

Bank swallows have been challenging to confirm. I've found them entering cavities on multiple dates, but never carrying food or visiting at the frequency that I'd assume they're feeding voracious young. These sites are also subject to serious disturbance.

What distinguishes occupying from prospecting?

Thanks.

Scott

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