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Remarkable
Analysis
Phenology
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Totals Derby Hill Bird Observatory, Mexico (NY) 2025
Species
Mar
Apr
May
Jun
Totals
SW
NE
Maximum
Presence
(%)
Presence
(days)
First
Last
1.
Black Vulture
2
1
0
0
3
0
3
2 (
19 Mar
)
2
2
19 Mar
3 Apr
2.
Turkey Vulture
15177
17071
3863
216
36327
0
36327
4136 (
31 Mar
)
93
82
6 Mar
4 Jun
3.
Osprey
33
242
197
15
487
0
487
57 (
6 May
)
69
61
18 Mar
4 Jun
4.
Golden Eagle
50
34
3
0
87
0
87
9 (
13 Mar
)
35
31
3 Mar
10 May
5.
Sharp-shinned Hawk
433
2768
1028
1
4230
0
4230
601 (
19 Apr
)
76
67
8 Mar
4 Jun
6.
Cooper's Hawk
230
99
39
2
370
0
370
44 (
19 Mar
)
75
66
3 Mar
4 Jun
7.
American Goshawk
1
5
0
0
6
0
6
2 (
19 Apr
)
6
5
6 Mar
30 Apr
8.
Northern Harrier
193
519
177
10
899
0
899
70 (
19 Apr
)
85
75
4 Mar
4 Jun
9.
Bald Eagle
171
387
879
77
1514
0
1514
133 (
10 May
)
86
76
1 Mar
4 Jun
10.
Red-shouldered Hawk
718
82
4
0
804
0
804
242 (
19 Mar
)
49
43
4 Mar
10 May
11.
Broad-winged Hawk
0
37224
10608
2873
50705
0
50705
19642 (
19 Apr
)
48
42
10 Apr
4 Jun
12.
Swainson's Hawk
0
1
0
0
1
0
1
1 (
12 Apr
)
1
1
12 Apr
12 Apr
13.
Red-tailed Hawk
1115
1108
284
15
2522
0
2522
262 (
19 Mar
)
83
73
1 Mar
4 Jun
14.
Rough-legged Buzzard
49
15
3
0
67
0
67
10 (
19 Mar
)
31
27
2 Mar
28 May
15.
American Kestrel
110
341
34
1
486
0
486
86 (
18 Apr
)
59
52
10 Mar
4 Jun
16.
Merlin
16
47
15
1
79
0
79
8 (
21 Apr
)
43
38
9 Mar
3 Jun
17.
Peregrine
5
11
9
0
25
0
25
3 (
15 May
)
23
20
10 Mar
24 May
Species
Mar
Apr
May
Jun
Totals
SW
NE
Maximum
Presence
(%)
Presence
(days)
First
Last
Totals
18303
59955
17143
3211
98612
0
98612
100
88
Observation hours
235:00
257:15
183:15
14:00
689:30
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