2o6 THE MIGRATIONS OF BIRDS 



larly north as far as Mason and Dixon's line or 

 even farther. Its western representative {Dendroica 

 coronata hooveri)^ which nests in Alaska, winters from 

 southern Oregon through the valleys of California. 

 I have seen the eastern form in eastern Kansas in 

 January during severely cold weather, and it is 

 frequently common in the milder winter climate of 

 Washington. 



The two forms of the palm warbler winter 

 regularly in the Gulf States, and in Florida are found 

 with black and white, orange-crowned, yellow- 

 throated, worm-eating, parula, black-throated blue, 

 and prairie warblers, oven-birds, and northern 

 water-thrushes. The black and white, Nashville, 

 orange-crowned, myrtle, and sycamore warblers are 

 found in winter in southern Texas, and the orange- 

 crowned, dusky, Alaska myrtle, Audubon's, Town- 

 send's, and hermit warblers occur at that season in 

 more or less abundance in the lower portions of 

 California. 



Of our North American species and subspecies, as 

 enumerated in the A. O. U. Checklist for 1910, there 

 are 22 that winter in the West Indies, 44 that are 

 found in winter in Mexico, 37 in Central America, 

 and 22 that reach South America. Four species 

 winter almost entirely in South America. The ma- 

 jority have an extended range, which may cover 

 the area from the Greater Antilles and Mexico south, 



