314 THE NATURALIST OF THE ST. CROIX 



Black Skimmer. Rhynchops nigra Linn. Accidental ; 

 down the bay. 



Ivory Gull. Pagophila alba {Gunn.). Accidental; 

 Grand Manan. 



Bonaparte's Gull. Larus Philadelphia (Ord). Very 

 abundant ; none breed. 



Sabine's Gull. Xema sabinii (Sab.). Eastport ; acci- 

 dental in bay. 



Gull-billed Tern. Sterna nilotica (Hasselq.). Acci- 

 dental in bay. 



Caspian Tern. Sterna caspia Pallas. Seen in migra- 

 tions; rare. 



Common Tern. Sterna hirundo Linn. Abundant. 



Arctic Tern. Sterna paradissea j5rzif«w. Abundant. 



Least Tern. Sterna antillarum (Less.). Accidental; 

 Grand Manan. 



Kittiwake Gull. Rissa tridactyla (Linn.). Abundant 

 fall and winter. 



Glaucous Gull. Larus glaucus (Briinn.). Rare; 

 only found in winter. 



White- winged Gull. Larus leucopterus Fader. Rare ; 

 only found in winter. 



Great Black-backed Gull. Larus marinus Limi. Win- 

 ter bird ; few breed. 



Herring Gull. Larus argentatus Briinn. Common; 

 resident. 



Ring-billed Gull. Larus delawarensis Ord. Common 

 in migration. 



Laughing Gull. Larus atricilla Linn. Few about 

 islands in summer. 



Black Tern. Hydrochelidon nigra surinamensis 

 (Gmel.). Accidental; Grand Manan. 



