after the walk we hear a bird call and think kestrel and then r. sees a different bird on the landing above and then we see the boy and girl kestrel fly by and alight in the poplar tree by the tracks. i go out on the fire escape to look and turn and see the red-tailed hawk looking toward the kestrels too. the kestrels are irked that the red-tail is squatting serenely in their place.