USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Management of Northern Prairies and Wetlands for the Conservation of Neotropical Migratory Birds

Table 1


Table 1.  Migratory statusa and population trendsb (based on BBS results in the Central Region) of birds of the northern prairies.
PRIMARILY NEOTROPICAL MIGRANTS
Species Trend
1966-1994 1966-1979 1980-1994
Swainson's hawk 0.9 1.3 1.6
Upland sandpiper 2.1 ↑↑↑ 3.7 ↑↑↑ 0.3
Burrowing owl -2.8 2.3 -0.5
Willow flycatcher NA NA NA
Western kingbird 1.1 ↑↑↑ 1.0 -0.0
Eastern kingbird 0.2 0.4 0.4
Common yellowthroat -0.9 ↓↓↓ 1.8 ↑↑↑ -2.1 ↓↓↓
Dickcissel -1.0 ↓↓↓ -4.5 ↓↓↓ 1.3 ↑↑↑
Clay-colored sparrow -1.1 -0.9 0.9
Lark bunting -0.7 -4.0 ↓↓↓ 1.1
Baird's sparrow -0.9 -4.0 ↓ -0.5
Grasshopper sparrow -2.9 ↓↓↓ -2.6 ↓↓↓ -1.8 ↓↓
Bobolink -2.4 ↓↓↓ -3.2 ↓ -3.0 ↓↓↓
Yellow-headed blackbird 0.5 3.3 -2.1 ↓↓
PRIMARILY TEMPERATE MIGRANTS
Northern harrier -2.1 ↓↓ -1.9 -0.3
Ferruginous hawk 6.2 ↑↑ 5.5 11.6 ↑↑↑
Killdeer -0.3 3.0  ↑↑↑ -2.0 ↓↓↓
Willet -1.8 4.7 ↑↑↑ -0.4
Marbled godwit 0.7 7.9 ↑↑ ---
Short-eared owl 2.0 27.7 ↑ -0.5
Horned lark -0.6 -0.2 -1.1 ↓↓↓
Sedge wren 1.3 -4.1 ↓↓ 5.7 ↑↑
Marsh wren 3.6 -4.9 ↓↓ 6.7 ↑↑↑
Gray catbird -1.0 0.7 -0.8
Sprague's pipit -0.1 -6.5 ↓↓↓ 3.0
Loggerhead shrike -3.1 ↓↓↓ -4.3 ↓↓↓ -1.3 ↓↓
Vesper sparrow 0.4 0.3 1.1 ↓
Lark sparrow -3.8 ↓↓↓ -5.6 ↓↓↓ -2.8 ↓↓↓
Savannah sparrow 0.5 -2.0 1.5
Song sparrow 1.4 ↑↑↑ -0.2 2.8 ↑↑
Swamp sparrow 1.3 6.3 ↑↑↑ 2.5
McCown's longspur 3.7 11.0 ↑↑ 5.8
Chestnut-col. longspur -0.4 0.5 -0.6
Red-winged blackbird -0.5 ↓↓ 1.1 ↑↑↑ -1.3 ↓↓↓
Western meadowlark -0.3 -1.1 ↓ 0.3
Brown-headed cowbird -0.5 ↓ 2.5 ↑↑↑ -0.2
PRIMARILY PERMANENT RESIDENTS
Greater prairie-chicken -0.9 16.8 ↑↑↑ 5.4
Sharp-tailed grouse 3.8 ↑ 2.7 8.0
a Based primarily on Gauthreaux (1992).
b Estimated annual percentage change;
 ↑ increasing at P<0.10; ↑↑ increasing at P<0.05; ↑↑↑ increasing at P<0.01; ↓ decreasing at P<0.10; ↓↓ decreasing at P<0.05; ↓↓↓ decreasing at P<0.01.

Return to Contents
Next Table -- Table 2

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/habitat/neobird/table1.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 04:51:02 EST
Menlo Park, CA [caww54]