QQ Henninger, Notes on some Ohio Birds. [jan 



bier was taken on the Cornell Campus; May 30, the White-eyed 

 Vireo in the Inlet Valley; May 31, the Tufted Titmouse at the 

 divide; and June 12, at the head of the Lake, the Prothonotary 

 Warbler. 



Thus we have four Austral species simultaneously invading a 

 region previously unknown to them and at the same time, an 

 increasing abundance in the Austral forms already resident. The 

 direction of this invasion has been undoubtedly from the south by 

 way of the Susquehanna but speculations as to the reasons ought 

 not to be given until it is determined whether this movement is 

 general or purely local. Before these can be formulated, the cooper- 

 ation of other observers is necessary and it is with this in view that 

 we have submitted our data from Ithaca. 



NOTES ON SOME OHIO BIRDS. 



BY W'. F. HENNINGER. 



Plate VI. 



1. Florida cserulea. Little Blue Heron. — On August 16, 

 1909, a young male in the white plumage with the slaty primary 

 tips was shot at the Loraniie Reservoir in Shelby County, Ohio, 

 and is now in my collection. Since July 2, 1902, when I recorded 

 this bird for the last time in southern Ohio (Auk, Vol. XIX, October, 

 1902, p. 396) no other specimens seem to have been recorded from 

 the State. The above mentioned specimen is the eleventh one I 

 have recorded in Ohio since August, 1901, more than any other 

 ornithologist has seen in the State and more than all the other records 

 put together. ^ 



2. Hydro chelidon nigra surinamensis. Black Tern. — This 

 bird, which I found nesting in the Sandusky Bay marshes in 1903, 

 1904, and 1907, and which Dawson and Jones found plentifully in 

 August, 1902, along the Ohio River, is a rare migrant in middle 

 western Ohio. Three were seen April 19, 1909, one on May 14, 

 1908, and a young male was shot on August 31, 1909, at the Grand 

 Reservoir. They evidently make two broods in the Sandusky Bay 



