Along the Track   Two nankeen kestrels with honey wings over pale bodies, hunt through a rare long stay, roosting together until only one is seen. The smaller bird likely the younger, still seizes prey and returns to a quiet spot among large trees. I think there is a nest—doubtless in a hollow.   It seems too soon when the second bird perches ruffled and alone as if she has stopped waiting for eggs to hatch or has no young to feed. Four currawongs harass her from perches a metre away, below and above and at the side. They dart…