2004 Observation Data for All Migration Projects
This chart represents the observation totals from all established HawkWatch International migration field sites in 2004.  These data are the property of HawkWatch International and its collaborators, and may not be used without written permission from HawkWatch International.

Please contact HawkWatch International for permission to use these data.

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Similar to 2002, trends in the abundance of migrating raptors at HawkWatch International fall monitoring sites across western

 

 

Chelan

Bonney

Goshute

Commissary

Sandia

Manzano

 

Ridge

Butte

Mountains

Ridge

Mountains

Mountains

 

WA

OR

NV

WY

NM

NM

Years

’99-’04

’95-’04

‘80-’04

2004

‘90-’04

‘90-’04

Captures / 10 hrs - prev. avg.

7.4

10.5

17.2

-

7.8

10.8

Captures / 10 hrs - 2004

5.0

14.9

15.8

4.7

4.7

13.6

Northern Harrier

6

2

2

0

0

0

Sharp-shinned Hawk

237

218

791

61

20

566

Cooper's Hawk

58

90

342

47

114

378

Northern Goshawk

16

13

29

12

1

2

Zone-tailed Hawk

-

-

-

-

0

0

Broad-winged Hawk

0

0

1

0

0

1

Swainson's Hawk

-

-

-

-

0

-

Red-tailed Hawk

16

61

61

7

7

43

Rough-legged Hawk

0

0

0

-

-

-

Golden Eagle

2

1

2

1

-

2

American Kestrel

5

0

35

3

1

18

Merlin

10

4

11

3

0

10

Prairie Falcon

1

4

4

2

1

3

Peregrine Falcon

1

0

0

0

0

5

TOTAL CAPTURES

352

393

1278

136

144

1028

Recaptures1

0

2

2

-

1

2

Foreign Recaptures2

0

2

2

0

2

0

Foreign Encounters3

2

2

15

0

2

5

1 Birds banded and later recaptured during another year at the same site.

2 Birds originally banded elsewhere and later recaptured at the migration site.

3 Birds banded at the migration site and later encountered somewhere else.