FROM WHENCE BIRDS HAVE COME INTO OHIO. ' 17 



which is now bounded as Ohio came from the south-west. 

 This is made clearer when we know that the species which 

 have comfe into the state during the last twenty years to be- 

 come regular summer residents, have come from the south- 

 west or west. Of the thirteen species regarded as accidental 

 within the state seven must have come from the south-west 

 or west, while five may have come from the e^st or north- 

 east, at least two of which were pretty clearly driven out of 

 their course by severe storms. 



The species which have come into the state since Dr. 

 Wheaton finished his catalogue, or which were not known 

 to him, at least, are as follows : From the south-west and 

 west : Prairie Horned Lark, Henslow Sparrow, Nelson 

 Sparrow, Bachman Sparrow, Little Blue Heron, and Black 

 Rail. The following species have been found as migrants, 

 and can hardly be classed as invaders in the true sense: 

 Parasitic Jaeger, Barrow Golden-eye, American Eider, and 

 Long-billed Dowitcher. Caspian Tern is probably a wander- 

 er from the south. 



The following species, known to Dr. Wheaton, have con- 

 siderably extended their range eastward and north-east- 

 ward : Lark Sparrow, Grasshopper Sparrow, Dickcissel, 

 White-eyed Vireo, Prothonotary Warbler, Worm-eating 

 Warbler, Golden-winged Warbler, Kentucky Warbler, 

 Hooded Warbler, Carolina Wren, Bewick Wren, and Car- 

 olina Chickadee. 



It has already been hinted that there is strong evidence 

 for the belief that several species which earlier ornitholo- 

 gists reported as breeding in the north-eastern counties have 

 ceased to do so, going farther north to spend the summer 

 now. This north-eastward movement can hardly be due 

 to settlement of the country in later years, but rather seems 

 in direct accord with the movement in the same direction 

 of the several species enumerated above. Dr. Merriam 

 shows that a tongue of the Lower Austral life zone reaches 

 about the middle of southern Indiana along the course of 

 the Ohio river. The strong tendency of the birds to follow 

 the course of the Ohio until they reach a latitude considera- 



