both my two lurcher dogs will, and have taken feather sometimes in spectacular fashion, a few weeks ago there was a large flock of rooks on a set barley field, normally they wouldnt bother as the know they carnt catch them, but both dogs ran at one particular rook in amongst the flock, turned out it couldnt fly how the knew is beyond me. the old bitch wont mouth any feather unless its dead she will even nudge them to make them take flight.