CHECK LIST OF THE 



A rare summer visitor, occasionally straggling here from the 

 prairie sloughs, where they are abundant. 



19. Bonaparte's Gull. 



(Larus Philadelphia.) 



A common spring and autumn visitor to the great lakes, arriving 

 in April and departing at the end of November. It is probable that 

 some breed in the northern part of the province. 



Subfamily STERN IN^E. Terns. 

 Genus STERNA. 



Subgenus THALASSEUS. 



20. Caspian Tern. 



(Sterna caspia.) 



A regular but not common spring and autumn visitor to the 

 great lakes. 



Subgenus ACTOCHELIDON. 

 *21, Cabot's Tern. 



(Sterna sandvicensis acuflavida.) 

 The capture of a specimen of this tern in the spring of 1882, at 

 Lucknow, is recorded by Mr. Mcllwraith. 



Subgenus STERNA. 



22. Porster s Tern. 



(Sterna forsteri.) 

 An uncommon summer visitor, breeds throughout its range. 



23. Common Tern 



(Sterna hirundo.) 

 A regular summer visitor, more frequently seen in spring and 

 autumn. 



Subgenus STERNULA. 



24. Least Tern. 



(Sterna antillarum.) 

 An accidental visitor. 



Genus HYDROCHELIUON. 



25. Black Tern. 



(Hydrochelidon nigra surinamensis.) 



This Tern is common in some of the large marshes throughout 

 the Province during the summer, but it is not generally distributed. 

 Breeds where it occurs. 



