Each fall, Hawk Ridge averaged over 82,000 migrating raptors from 1991 to 2010; and using a different procedure, averaged 39,000 raptors from 1972-1990.
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Turkey Vulture
Earliest date: Aug 2
Latest date: Nov 26
Peak migration: 15 Sep - 5 Oct
Record daily high: 799 on 29 Sep 1996
Record seasonal high: 2,243 in
2003
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Broad-winged
Hawk
Earliest date: Aug 1
Latest date: Nov 1
Peak migration: 10 Sep - 25 Sep
Record daily high: 101,716
on 15 Sep 2003
Record seasonal high: 160,776
in 2003
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Osprey
Earliest date: Aug 1
Latest date: Oct 29
Peak migration: 1 Sep - 20 Sep
Record daily high:
90 on 17
Sep 1997
Record seasonal high: 575 in 1998
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Red-tailed
Hawk
Earliest date: Aug 1
Latest date: Dec 12
Peak migration: 1 Oct - 5 Nov
Record daily high: 3,991 on Oct. 24, 1994
Record seasonal high: 15,448 in 1994
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Bald Eagle
Earliest date: Aug 13
Latest date: Dec 13
Peak migration: 15 Oct - 15 Nov
Record daily high: 743 on 22 Nov 1994
Record seasonal high: 4,368 in 1994
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Rough-legged
Hawk
Earliest date: Sep 6
Latest date: Dec 13
Peak migration: 15 Oct - 10 Nov
Record daily high: 204 on 10 Nov 1963
Record seasonal high: 1,011 in 1994
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Northern
Harrier
Earliest date: Aug 2
Latest date: Nov 28
Record daily high: 216 on 17 Sep 1994
Record seasonal high: 1,390 in 1994
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Golden Eagle
Earliest date: Sep 13
Latest date: Dec 12
Peak migration: 20 Oct - 10 Nov
Record daily high: 29 on 26 Oct 2001
Record seasonal high: 190 in 2001
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Sharp-shinned
Hawk
Earliest date: Aug 5
Latest date: Dec 8
Peak migration: 1 Sep - 20 Oct
Record daily high: 2,040
on 8 Oct
2003
Record seasonal high: 22,344 in 1997
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American
Kestrel
Earliest date: Aug 1
Latest date: Nov 11
Peak migration: 5 Sep - 5 Oct
Record daily high: 744 on 9 Sep 2002
Record seasonal high: 3,769 in 2002
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Cooper's Hawk
Earliest date: Aug 15
Latest date: Nov 21
Peak migration: 10 Sep - 10 Oct
Record daily high: 45 on 14 Sep 2000
Record seasonal high: 356 in 1993
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Merlin
Earliest date: Aug 13
Latest date: Dec 3
Peak migration: 5 Sep - 10 Oct
Record daily high: 73 on 9 Oct 1998
Record seasonal high: 460 in 1997
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Northern
Goshawk
Earliest date: Aug 15
Latest date: Dec 11
Peak migration: 10 Oct - 15 Nov
Record daily high: 1,229 on 15 Oct 1982
Record seasonal high: 5,819 in 1982
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Peregrine
Falcon
Earliest date: Aug 21
Latest date: Oct 31
Peak migration: 15 Sep - 30 Sep
Record daily high: 21 on 29 Sep 1997
Record seasonal high: 111 in 1999
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Great Horned Owl
Earliest date: Oct 15
Latest date: Dec 8
Peak migration: after Nov 15
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Barred Owl
Earliest date: Sep 30
Latest date: Dec 1
Peak migration: 15 - 31 Oct
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Long-eared Owl
Earliest date: Sep 4
Latest date: Nov 19
Peak migration: 15 -
31 Oct
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Boreal Owl
Earliest date: Oct 11
Latest date: Nov 19
Peak migration: 20 Oct - 5 Nov
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Northern Saw-whet Owl
Earliest date: Aug 17
Latest date: Nov 16
Peak migration: 1 - 31 Oct |
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