ABO - Population Index 1992-1997

Alaska Bird Observatory

Please see the Notes on Limitations on Use of this data set out below.

Table 2
Population index using geometric mean of daily migration counts (birds/1000nh) of 19 species (n>10 individuals each year) at CFMS during fall migration: 1992-1997.

Species

1992

1993

1994

1995

1996

1997

Mean
(92-96)

+/-SD

Alder Flycatcher

2.60

3.26

3.03

4.92

3.39

4.27

3.44

0.88

Hammond's Flycatcher

1.42

1.47

2.00

2.21

3.35

2.54

2.09

0.78

Black-capped Chickadee

2.18

1.58

1.53

3.39

1.79

1.84

2.10

0.77

Ruby-crowned Kinglet

3.10

3.61

5.46

4.62

6.42

5.53

4.64

1.35

Gray-cheeked Thrush

3.17

1.85

1.94

2.88

1.59

2.26

2.29

0.70

Swainson's Thrush

4.76

4.36

3.68

6.31

4.04

5.88

4.63

1.02

American Robin

2.48

1.48

2.04

1.91

1.98

1.96

1.98

0.36

Orange-crowned Warbler

27.78

8.30

19.68

26.88

17.89

24.81

20.11

7.89

Yellow Warbler

7.12

3.34

3.39

7.42

3.89

5.69

5.03

2.06

Myrtle Warbler

35.92

2.15

23.52

15.63

21.93

30.42

19.83

12.32

Blackpoll Warbler

4.02

1.69

2.50

3.01

2.69

3.18

2.78

0.85

Northern Waterthrush

5.15

2.53

1.66

2.37

2.10

2.83

2.76

1.38

Wilson's Warbler

6.61

4.07

4.38

7.22

3.53

3.89

5.16

1.64

American Tree Sparrow

6.34

13.38

11.64

28.78

12.44

24.66

14.52

8.43

Savannah Sparrow

3.19

3.41

1.73

6.48

3.20

3.70

3.60

1.74

Fox Sparrow

1.98

1.88

2.21

2.03

2.42

2.79

2.10

0.22

Lincoln's Sparrow

18.06

5.47

6.31

13.47

8.29

10.65

10.32

5.33

Gambel's White-crowned Sparrow

3.37

2.24

3.29

2.38

3.91

2.40

3.04

0.71

Slate-colored Junco

10.46

7.28

25.16

17.26

23.21

21.04

16.67

7.78

Total

149.70

73.35

125.14

159.19

128.07

160.33

127.09

33.30

Notes on Limitations on Use of Data

© 1992-1997 Alaska Bird Observatory, Inc.
These data is copyrighted 1992-1997 Alaska Bird Observatory, Inc. All rights are reserved. Posting of these data on the World Wide Web is not a waiver of that copyright or any other intellectual property rights associated with the data. No part of these data may be used except for viewing as displayed here by any persons without the prior written consent of Alaska Bird Observatory, Inc. For information regarding the use of this data please contact Alaska Bird Observatory at birds@polarnet.com

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Species	1992	1993	1994	1995	1996	1997	Mean (92-96)	+/-SD
Alder Flycatcher	2.60	3.26	3.03	4.92	3.39	4.27	3.44	0.88
Hammond's Flycatcher	1.42	1.47	2.00	2.21	3.35	2.54	2.09	0.78
Black-capped Chickadee	2.18	1.58	1.53	3.39	1.79	1.84	2.10	0.77
Ruby-crowned Kinglet	3.10	3.61	5.46	4.62	6.42	5.53	4.64	1.35
Gray-cheeked Thrush	3.17	1.85	1.94	2.88	1.59	2.26	2.29	0.70
Swainson's Thrush	4.76	4.36	3.68	6.31	4.04	5.88	4.63	1.02
American Robin	2.48	1.48	2.04	1.91	1.98	1.96	1.98	0.36
Orange-crowned Warbler	27.78	8.30	19.68	26.88	17.89	24.81	20.11	7.89
Yellow Warbler	7.12	3.34	3.39	7.42	3.89	5.69	5.03	2.06
Myrtle Warbler	35.92	2.15	23.52	15.63	21.93	30.42	19.83	12.32
Blackpoll Warbler	4.02	1.69	2.50	3.01	2.69	3.18	2.78	0.85
Northern Waterthrush	5.15	2.53	1.66	2.37	2.10	2.83	2.76	1.38
Wilson's Warbler	6.61	4.07	4.38	7.22	3.53	3.89	5.16	1.64
American Tree Sparrow	6.34	13.38	11.64	28.78	12.44	24.66	14.52	8.43
Savannah Sparrow	3.19	3.41	1.73	6.48	3.20	3.70	3.60	1.74
Fox Sparrow	1.98	1.88	2.21	2.03	2.42	2.79	2.10	0.22
Lincoln's Sparrow	18.06	5.47	6.31	13.47	8.29	10.65	10.32	5.33
Gambel's White-crowned Sparrow	3.37	2.24	3.29	2.38	3.91	2.40	3.04	0.71
Slate-colored Junco	10.46	7.28	25.16	17.26	23.21	21.04	16.67	7.78
Total	149.70	73.35	125.14	159.19	128.07	160.33	127.09	33.30

Alaska Bird Observatory

Table 2 Population index using geometric mean of daily migration counts (birds/1000nh) of 19 species (n>10 individuals each year) at CFMS during fall migration: 1992-1997.

Notes on Limitations on Use of Data

Table 2
Population index using geometric mean of daily migration counts (birds/1000nh) of 19 species (n>10 individuals each year) at CFMS during fall migration: 1992-1997.