2 no 3 Maybe even 4

So I went back tonight to look at my pair of Buzzards, suddenly there where three soring above my head. All three screeching their warnings, and apparently protecting one particular area of tress.

So I ask myself is there a nest there with one other at home ?

I wont know for now its so high up! I managed to get a picture of two flying together but not that good quality. So this of one of them, above my head nearly, at tree top height.