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EARLY SUCCESSIONAL: Priority Species
Population estimates and targets (numbers represent individuals
unless otherwise indicated) for priority species of pine savannah
habitat in the Mid-Atlantic Coastal Plain. Estimates were
extrapolated from BBS relative abundances unless otherwise
indicated; they should be considered an index of relative
population sizes and only a VERY APPROXIMATE estimate of true
population sizes.
|
| |
Conservation Score
|
Population Estimate
|
% Loss Since 1966
|
Population Target
|
| Prairie
Warbler |
25 |
76,000 |
>50% |
152,000
|
| Bachman's
Sparrow |
25 |
<200* |
? |
200
|
| Henslow's
Sparrow |
25 |
<400* |
? |
400 |
| Blue-winged
Warbler |
24 |
4,300 |
>50% |
8,600 |
| Upland
Sandpiper |
22 |
<20 |
>50% |
50 |
| White-eyed
Vireo |
22 |
|
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|
| Northern
Bobwhite |
21 |
122,200 |
>50% |
250,000 |
| Brown
Thrasher |
21 |
52,000 |
>50% |
100,000 |
| Eastern
Towhee |
21 |
265,400 |
>50% |
530,000 |
| Field
Sparrow |
21 |
119,000 |
>50% |
240,000 |
| Barn
Owl |
20 |
? |
? |
|
| Grasshoppper
Sparrow |
20 |
74,300 |
>50% |
150,000 |
| American
Kestrel |
19 |
6,500 |
inc. |
6,500 |
| Gray
Catbird |
19 |
313,300 |
>50% |
625,000 |
| Yellow-breated
Chat |
19 |
110,000 |
25% |
150,000 |
| Dickcissel |
20 |
446 |
inc. |
500 |
| Loggerhead
Shrike |
20 |
<50** |
? |
50 |
| Short-eared
Owl |
19 |
<50** |
? |
50
|
| Bobolink |
19 |
? |
|
|
| Vesper
Sparrow |
17 |
6,000 |
>50% |
12,000
|
| Northern
Harrier |
16 |
580 |
inc. |
600
|
| Savannah
Sparrow |
13 |
? |
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*Estimate from Virginia population (Fleming and Alstine 1994a,
1994b, Watts et al. 1998)
**Guestimate based on available habitat (actual population
may be lower)
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