A tree near me reveals it secret every winter. The secret being that despite being on a small roundabout in a busy road it is the home of several nests.
My perception of this being odd indicates that I have a limited mindest of what is appropriate or expected behaviour. Surly the birds would use the hundreads of trees in the park on the other side of the road.
If I limit the behaviour of birds in this way how do I limit my own.