Could these be from the same flock of birds that caused the crash? Those geese are flying west southwest away from the camera. Directly behind the camera is a straight line to Laguardia Airport, directly on the migration path of geese from New England down the Eastern Seaboard.
Whenever it snows, geese take to the air looking for grassier areas to forage for food. It snowed earlier today across the region. The jet liner was flying at jet liner speed and a few minutes later, here come the geese.