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Platte River Ecosystem Resources and Management, with Emphasis on the Big Bend Reach in Nebraska


Tables


Table 4. Long-term (1966-1987) trends in continental populations for breeding birds in the Platte River ecosystem. Significance levels are (*)= P<0.05, (**)= P<0.01.


Species
% Annual
Decline

Habitat
Neotropical
Migrant?
Northern pintail 6.9 ** Wetland N
Field sparrow 3.7** Edge N
Grasshopper sparrow 3.2** Grassland N
Loggerhead shrike 3.1** Edge N
Northern flicker 2.8* Woodland N
Lark bunting 2.8** Grassland N
Black-billed magpie 2.7** Grassland N
Lark sparrow 2.5** Grassland N
Rufous-sided towhee 2.3** Edge N
Northern bobwhite 1.9** Edge N
Eastern meadowlark 1.9** Grassland N
Northern mockingbird 1.8** Edge N
Orchard oriole 1.8** Woodland Y
Wood thrush 1.7** Woodland Y
Yellow-breasted chat 1.5** Edge Y
Eastern wood-pewee 1.4** Woodland Y
Blue jay 1.4** Woodland N
Northern harrier 1.1* Grassland N
Song sparrow 1.1** Edge N
House sparrow 1.1** Urban N
Red-headed woodpecker 0.9* Woodland N
Brown thrasher 0.9* Edge N
Western meadowlark 0.8* Grassland N
Eurorpean starling 0.7* Urban N
Northern cardinal 0.6** Woodland N
Common grackle 0.6* Urban N
American goldfinch 0.6** Edge N
Indigo bunting 0.5** Edge Y
Brown-headed cowbird 0.5* Grassland N


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