|
|
|
BARRIER BAY ISLANDS: 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
|
| Piping
Plover |
28
|
500*
|
|
|
| Roseate
Tern |
28
|
|
|
|
| American
Black Duck |
24
|
5,318
|
14%
|
6,200
|
| Wilson's
Plover |
23
|
<100**
|
|
|
| Brown
Pelican |
22
|
<1,500***
|
|
|
| American
Oystercatcher |
22
|
<1,000****
|
|
|
| Black
Skimmer |
21
|
<7,500***
|
|
|
| Least
Tern |
20
|
<3,500***
|
|
|
| Gull-billed
Tern |
20
|
<1,500***
|
|
|
| Willet |
20
|
12,300
|
inc.
|
15,000
|
| Forster's
Tern |
20
|
<8,000***
|
|
|
| Royal
Tern |
19
|
<10,000***
|
|
|
| Tricolored
Heron |
19
|
<2,500***
|
|
|
| Glossy
Ibis |
18
|
<10,000***
|
|
|
| Northern
Harrier |
16
|
580
|
inc.
|
600
|
| Little
Blue Heron |
16
|
<2,500***
|
|
|
| Yellow-crowned
Night Heron |
14
|
<1,500***
|
|
|
| Great
Egret |
11
|
<10,000***
|
|
|
| Caspian
Tern |
?
|
|
|
|
| Sandwich
Tern |
?
|
<100***
|
|
|
| Ipswich
Savannah Sparrow |
13
|
?
|
|
|
|
|
*Data from international Piping Plover survey
**Data from Watts et al. 1996
***Data compiled from state waterbird surveys
****Data from WIlliams et al. 1997
|
 |
|
| |
|
