Falco columbarius. L. = Cambridge River moose G. = Dutts 1896 Lake Umbagog. September 5 - 7 3/4, 8 & 29' Sept. 5th - At about sunrise this morning I was on the marsh opposite Barnard's Pond when a Pigeon Hawk appeared in hot pursuit of a Sanderling. The chase led directly towards me. When the two birds were over a shallow pond & within 30 yards of me the Hawk snatched the Sanderling. The latter doubled sharply and the Hawk followed it but lost fully ten yards in turning. The Sanderling doubled a second time when the Hawk, apparently disheartened, gave up the pursuit and flew straight off out of sight over the woods. The Sanderling alighting quietly among a number of its companions which, all the while, had been feeding on a mud bar on the farther side of the pond. The Hawk appeared to fly at least twice as fast as the Sanderling missing its wings with a rapid quivering motion like a Duck & beating on its wings just as it gathers itself would be within. Sept. 8 Shot a young ♀. It was picked on a flint bearing its plume. Stomach empty, a good deal of fat lying thin on ribs & abdomen. Sept. 8. As I was standing on the marsh watching a small flock of Greenshanks a ♀ Pigeon Hawk passed me within 10 or 15 feet, flying very briefly just about the tops of the tall grasses & drawing a perfectly straight line across the marsh & into the flint beyond. It appeared to be hunting yet it apparently did not notice the Sandpipers which were all standing perfectly motionless. 104