A juvenile Red-tailed Hawk has claimed new territory, and the GNG has become its base camp. There is a pair of adult red-tails that occasionally hunt in the garden, but they seem to be leaving this juvenile alone, allowing it to hunt un-harassed (un-harassed by them anyway).
Our resident Common Ravens basically leave the adult Red-tailed Hawk pair alone. But this juvenile hawk is not so lucky. The ravens endlessly badger the poor inexperienced youngster, probably in an attempt to convince him/her that it is they who rule the skies around these parts!