NATURAL HISTORY, TORONTO REGION 



20. Caspian Tern. Sterna caspia. Regular mi- 

 grant, usually not common. 



21. Forster's Tern. Sterna forsteri. Two records, 

 possibly a regular migrant. 



22. Common Tern. Sterna hirundo. Regular mi- 

 grant, sometimes common. 



23. Black Tern. Hydrochelidon nigra surina- 

 mensis. Regular migrant, sometimes common ; rare 

 breeder. 



Family PBOCELLAEIIDAE. 



24. Black-capped Petrel. Aestrelata hasitata. Ac- 

 cidental, one record. 



Family SULIDAE. 



25. Gannet. Sula bassana. Accidental, two rec- 

 ords, one recent (Auk, 1913, p. 225). 



Family PHALACROCORVACIDAE. 



26. Cormorant. PJialacrocorax carbo. Acci- 

 dental, one record. 



27. Double-crested Cormorant. PJialacrocorax aur- 

 iius auritus. Irregular migrant, not common. 



Family PELECANIDAE. 



28. White Pelican. Pelecanus erytJirorhi 

 Accidental; one taken (Auk, 1913, p. 225) ; several 

 sight records. 



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