BIRDS OF PENNSYLVANIA. 



25. Sterna dougalli Montag. 



Roseate Tern. 72. Specimens have been captured on the Schuylkill and" 

 Delaware rivers. 



26. 8. antillarum (Less.). 



Least Tern. 74. Specimens have been taken in Chester, Lancaster and 

 Montgomery counties in August and September. 



27. S. fuliginosa Gmel. 



Sooty Tern 75. Specimens have been taken in the spring and early fall 

 in Chester and Delaware counties. 



28. Hydrochelidnn nigra surinamcnsis (Gmel.). 



Black Tern 77. Specimens have been taken in Chester, Delaware, York 

 and Erie counties. 



Family RYNCHOPID.E. The Skimmers. 



29. Rynchops nigra Linn. 



Black Skimmer 80. Accidental. Specimen shot near Philadelphia, after 

 a severe gale in September, 1880. 



Family PROCELLARIIDJE. The Shearwaters and Petrels. 



30. Puffinus major Faber. 



Greater Shearwater 89. Accidental. Chester county. Michener. 

 3L Procellaria pelagica Linn. 



Stormy Petrel; "Mother Carey's Chicken." 104. Accidental. One cap- 

 tured in Philadelphia, Turnbull. 



32. Oceanodroma leucorhoa (VieilL). 



Leach's Petrel. 106. Accidental. Chester county, September, 1879. 

 " During a gale in August, 1842, a number were driven inland." Tarn- 

 bull. 



Family PHALACROCORACID^E. The Cormorants 



33. Plialacrocorax car bo (Linn.). 



Cormorant. 119. Very rare, or accidental winter visitor. About twelve 

 years ago Mr. H. B. Graves obtained a specimen in Berks county. 



34. P. dilophus (Sw. & Rich.). 



Double-crested Cormorant 120. "An occasional straggler is observed in 

 the vicinity of Erie." G. B. Sennett. 



Family PELECANID.E. The Pelicans. 



35. Pelecanus erythrorhynchos Gmel. 



American White Pelican. 125. Has been seen at rare intervals on the 

 Delaware. TarnbulL Many years ago a few of these birds were seen 

 near Erie. G. B. Sennett. 



Family ANATID.E. The Ducks, Geese and Swans. 



36. Merganser americanus (Cass.) 



American Merganser. 129. Migrant 



37. M. serrator (Linn.). 



Red-breasted Merganser. 130. Migrant 



38. Lophodytes cucullatus (Linn.). 



H ooded Merganser. 131. Migrant Probably breeds occasionally. 



39. Anas boschas Linn. 



Mallard. 132. Frequent spring and fall migrant According to Audubom 

 this species formerly bred along the meadows of the Schuyikill. 



