The Cooper's Hawk population shift from summer to winter is very subtle, while Broad-winged is dramatic, and that dramatically more migratory behavior shows on the mountain.
Red-tailed is estimated at 2.8 million, Red-shouldered 1.8, harrier 0.8, Sharpy 0.4, both eagles 0.2.
________________________________
From: State College (PA) Bird Club <SCBIRDCL...> on behalf of Ron Rovansek <rrovansek...>
Sent: Monday, November 17, 2025 9:38 PM
To: <SCBIRDCL...> <SCBIRDCL...>
Subject: Re: Stone Mt. (14 Nov 2025) 32 Raptors
I don’t think Broadwings are twice as numerous as other species combined, but they’re twice as numerous at hawk watches. Broadwings ALL migrate south and they tend to migrate in groups and in a way that makes them highly visible, so they’re easier to see and count than many other species. I’d guess Cooper’s Hawks have a similar breeding population as Broadwings, but not all Coops migrate far and they usually don’t fly as high or kettle as much as Broadwings so the Coops are more likely to pass by unnoticed.
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On Nov 14, 2025, at 5:15 PM, Blizard, David A <dab22...> wrote:
BW’s represent approx 2/3rds of those recorded…any comments? Are BW’s twice as numerous as all other raptors/hawks/whatever combined in our flyway?
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Daily Raptor Counts: Nov 14, 2025
Species
Day's Count
Month Total
Season Total
BV
5
10
11
TV
8
35
294
OS
0
0
30
BE
4
75
252
NH
2
10
34
SS
1
20
389
CH
0
4
42
AG
0
0
0
RS
0
3
13
BW
0
0
2410
RT
11
113
317
RL
0
0
0
GE
1
41
64
AK
0
0
28
ML
0
0
19
PG
0
1
12
UA
0
0
3
UB
0
0
3
UF
0
1
1
UE
0
1
3
UR
0
1
12
SW
0
0
2
Total:
32
315
3939
Observation start time:
09:30:00
Observation end time:
15:45:00
Total observation time:
6.25 hours
Official Counter
Jen Anderson, Mark McLaughlin
Observers:
Connor Schmitt, Julian Avery, Mark McLaughlin
Visitors:
Connor, Mark McLaughlin, Julian Avery and 15 PSU students
Weather:
Started with 25% cloud cover and increased to 100% by noon. Not much wind all day.
Raptor Observations:
BAEA: AD 11:17, AD 12:07, IMM 12:28, AD 12:34 GOEA: AD 1:04 1st NOHA: male 2nd NOHA: female A Barred Owl called around 2:30.
Non-raptor Observations:
Groups of robins flying over early. 5 Rusty Blackbirds Snow Bunting (male in winter plumage) by the parking area
