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Hawk at feeder, need ID
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May 16, 2019 14:11:55   #
kkayser
 
Uuglypher wrote:
t

Right you are; he was hatched last year and will molt into adult plumage this summer and will be “hard penned” by mid September. He will appear slightly smaller then because the juvenile flight and deck feathers are 10% to 15% longer than they will be in adult plumage. The longer feathers give the juveniles a bit of advantage during their first year of learning to fly and catching prey.

The molt from juvenile to adult plumage will be complete. Thereafter, in subsequent years a slowly increasing percentage of one year’s contour feathers (not flight feathers) will wait an additional year to be replaced and as the bird ages a few feathers may not be replaced until having served two or three complete years.

It is an interesting process.

Dave
t br br Right you are; he was hatched last year a... (show quote)


the wonders of evolution

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May 16, 2019 15:28:05   #
davyboy Loc: Anoka Mn.
 
kkayser wrote:
the wonders of evolution


What was he before evolution again? A dinosaur

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May 17, 2019 06:15:02   #
prcb1949 Loc: Ex Zimbabwe - Now UK
 
[quote=kkayser]Caught this hawk at our feeder. Had to grab camera and shoot through dirty thermopane. One shot and it was gone, heading north. Note the long tail, black beak with yellow near head, yellow foot. As to size: scaled from the feeder the bird is 15 inches, but since the bird is leaning forward, 15 is the foreshortened distance. If the subject is perched 20 deg from vertical the actual length is 15/sin 70 = 16 inches. If the subject is 30 deg off of vertical the actual length is 15/sin 60 = 17.3 inches.

I think it is a northern harrier. This bird has owl like feathers around the eyes. Although this angle is not good to assess that feature, I think they are there. Anyone else have any ideas?

I had to just grab the camera and shoot whatever the settings were: Canon 5dsr, 400mm f/4.0 1/200 f/8 hands held, iso 100.[/q

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May 17, 2019 06:18:36   #
prcb1949 Loc: Ex Zimbabwe - Now UK
 
kkayser wrote:
Caught this hawk at our feeder. Had to grab camera and shoot through dirty thermopane. One shot and it was gone, heading north. Note the long tail, black beak with yellow near head, yellow foot. As to size: scaled from the feeder the bird is 15 inches, but since the bird is leaning forward, 15 is the foreshortened distance. If the subject is perched 20 deg from vertical the actual length is 15/sin 70 = 16 inches. If the subject is 30 deg off of vertical the actual length is 15/sin 60 = 17.3 inches.

I think it is a northern harrier. This bird has owl like feathers around the eyes. Although this angle is not good to assess that feature, I think they are there. Anyone else have any ideas?

I had to just grab the camera and shoot whatever the settings were: Canon 5dsr, 400mm f/4.0 1/200 f/8 hands held, iso 100.
Caught this hawk at our feeder. Had to grab camer... (show quote)


This appears to be a Juvenile Coopers - the tail is rounded whereas the Sharpie has a square tail - which also has a broader sub terminal band.

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May 17, 2019 08:34:30   #
jpgto Loc: North East Tennessee
 
Good catch.

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