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NEW YOKK STATE MUSEUM 



In the bird fauna of the transition zone southern species again pre- 

 dominate in a ratio of more than two to one. Some of the New York 

 birds that find their northern breeding limit in this zone but which have 

 an extensive range to the southward are : 



Colinus virginianus 



Bonasa umbellus umbellus 



Zenaidura macroura 



Coccyzus americanus 



Antrostomus vociferus 



Empidonax minimus 



Icterus galbula 



Pipilo erythrophthalmus 



Ammodramus savanuarum passeriuus 



Ammodramus caudacutus 



Cyanospiza cyanea 



Slelgidopteryx serripennis 



Laniics ludovicianus migrans 



Helminthophila chrysoptera 



Dendroica aestiva 



Dendroica discolor 



Compsoth lypis americana 



Cistothorus palustris 



Galeoscoptes carolinensis 



Harporhynchus rufus 



Hylocichla mustelina 



Sialia sialis 



bob-white 

 ruffed grouse 

 mourning dove 

 yellow-billed cuckoo 

 whip-poor-will 

 least flycatcher 

 Baltimore oriole 

 towhee 



grasshopper sparrow 

 sharp-tailed sparrow 

 indigo bunting 

 rough-winged swallow 

 migrant shrike 

 golden-winged warbler 

 yellow warbler 

 prairie warbler 

 parula warbler 

 long-billed marsh wren 

 catbird 



brown thrasher 

 woodthrush 

 bluebird 



On the other hand only about a dozen of the birds that find their 

 southern breeding limit in the transition zone of New York range 

 widely toward the north. Some of these are : 



Podilymbus podiceps 

 Empidonax traillii alnorum 

 Ca/podacus purpureas 

 Vireo solitarius 

 Helminthophila rubricapilla 

 Dendroica caerulescens 

 Dendroica pennsylvauica 

 Earns atricapillus 

 Hylocichla ustulata swainsoni 

 Hylocichla fu sees c ens 



pied-billed grebe 

 alder flycatcher 

 purple finch 

 blue-headed vireo 

 Nashville warbler 

 black-throated blue warbler 

 chestnut-sided warbler 

 chickadee 

 olive-backed thrush 

 Wilson's thrush 



