Pack Monadnock Raptor Migration Observatory (26 Sep 2023) 317 Raptors

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Sep 26, 2023, 9:13:46 PMSep 26
Pack Monadnock Raptor Migration Observatory
Peterborough, New Hampshire, USA

Daily Raptor Counts: Sep 26, 2023
SpeciesDay's CountMonth TotalSeason Total
Black Vulture011
Turkey Vulture94848
Bald Eagle89194
Northern Harrier32828
Sharp-shinned Hawk31594604
Cooper's Hawk67374
American Goshawk122
Red-shouldered Hawk21010
Broad-winged Hawk2441022410248
Red-tailed Hawk033
Rough-legged Hawk000
Golden Eagle011
American Kestrel54750
Peregrine Falcon21818
Unknown Accipiter055
Unknown Buteo022
Unknown Falcon033
Unknown Eagle000
Unknown Raptor21515

Observation start time: 09:00:00
Observation end time: 16:00:00
Total observation time: 7 hours
Official CounterJulie Brown, Phil Brown
Observers: Annamarie Saenger, Betsy Smith, Julie Brown, Meade Cadot, Mike Gebo

35. Great to be joined by Betsy Smith again who found distant birds and helped with interpretation.

Lingering low clouds were ushered off the summit just before 10 am EST by a stiff NNE wind, which persisted in strength and direction throughout the day. Temps rose from 48 to 59 F, and cloud cover remained present with a hazy wash across the sky, reducing visibility.

Raptor Observations:
Upon scanning the skies at 10 am EST as the clouds lifted, a large kettle of about 160 Broad-wings rose up from the valley to the west and quickly broke apart, being blown south at a good clip. A minute later, another kettle of 65 lifted off and followed them. Just a handful more passed in the next half hour, and then only one more for the rest of the day. Yet, even without this strong final(?) push of 'wings, it was a solid day on the mountain with some excellent looks at close birds. All regularly-occurring September migrant raptors put in appearances today. Two male harriers (of three total birds), a juvenile American goshawk (I had to use the new official name), and two Peregrines were other highlights. A Sharpie with talons down came roaring in past Gina the decoy owl in pursuit of the kinglet and warbler flock, and both Kestrel and Merlin were lured in by the owl.

Non-raptor Observations:
43 Canada Geese, 1 DC Cormorant, 3 Pine Siskin, 2 Red Crossbill, 1 Hummingbird, 1 Yellow-bellied Sapsucker, 1 Yellow Palm Warbler, 5 Blackpoll Warblers, 1 Magnolia Warbler, 10 Yellow-rumped Warblers, 1 Common Yellowthroat

The morning looks potentially better as the winds remain from the NE until noon, when an easterly component may prevail. But perhaps light enough to keep migration going.

Report submitted by Phil Brown (
Pack Monadnock Raptor Migration Observatory information may be found at:
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