A Revised List of Cincinnati Birds. 23 



20. PoKZANA JAMAiCENSis, Cassio. — Little Black Bail. — Partially 

 identified at Madisouville. 



21. Chaulelasmus stueperus, Gray. — Gadwall Buck. — " Breeds at 

 St. Mary's Reservoir" ( Dury). 



22. Larus marinus, Linnreus. — Great Black-backed Gall. 



23. Larus atricilla, Linnoeus. — Laughing Gull. 



24. Stekna angltoa, Montague. — Gidl-billed Tern. 



25. Sterna hirundo, Linni^us. — Common Tern ; Sea Swallow. 



26. PoDiOErs griseigena, var. holbolli, Cones. — Red-necked Grebe. 

 Note. — Podiceps cristatus, Latham, has heretofore been included in 



various standard works as a bird of general distribution in North 

 America ; according to Dr. Brewer, however, there is "no authentic 

 record of the capture of a single specimen in America," and it is there- 

 fore dropped from the list of North American Birds. — See his article 

 in Bulletin JSfuttall Orn. Club for April, 1878, p. 52. 



SUMMARY. 



The two hundred and ftft3'-six identified species may be approximately 

 divided as follows: 



Constant residents, ........ 27 



Summer residents, ........ 62 



Winter visitants, ......... 10 



Regular migrants, . . . . . . . . 82 



Irregular migrants, ........ 37 



Casual visitants, ........ 31 



Species that have disappeared within forty years, ... 7 



Total, 256 



Adding the twenty-six unidentified species to the aggregate number 

 of iri'egular and casual visitants, where thej^ would properly belong if 

 identified, we have a total of ninetj'-four, or exactl}' one-third of the 

 total number of species in both lists; apparently a remarkable pro- 

 portion of "casuals," and one probably w'ithont a parallel in any other 

 class of vertebrates. It is not by any means peculiar, however, to this 

 locality or State, as may be seen by consulting the List of Mas- 

 sachusetts Birds by Allen,^ or that of the Birds of Connecticut by 

 Merriam,- and other North American Lists, in which about the 



1 A List of the Birds of Massachusetts, with Annotations, by J. A. Allen. BulMin of the 

 EsKcx Imtitute, Vol. X., pp. 3-37; April, 1878. 



2 A Review of the Birds of Connecticut, with Remarks on their Habits, by C. Hart. 

 Merriam. Trans. Coini. Academy, Vol. IV., 1S77. 



