male NG- 3 sightings

16 April  2 P.M.  St. Mary's Church - Anacortes
1 Mature male NG, bright sun. The hawk was circling, gliding, flapping, and drifting from near my zenith at 100 feet elevation to about 300 feet elevation. Clearly visible was the silver- gray chest and belly. Observation time about 4 minutes.
30 minutes later a male NG was circling in the same area, at about 100 feet elevation to about 300 feet elevation, and drifting far to my right flank. Observation time about 4 minutes. Then 2 minutes later to my front and less than 100 feet elevation, was a male NG circling about 100 yards away. This hawk also took to the sky at about 300 feet elevation. Observation time 3 minutes. All NG had  same tail length and wing length. So all sightings could have been of the same hawk. But the time and the distance separating the second sighting from the third indicates 2 different male NG.