BIRDS OG THE.CONNBCTICUT VALLEY 
54. 
£0, 
IN MASSACHUSETTS. 
Colymbus Holboellii. HOLBOELL’S GREBE. Rare 
fall migrant. 
Colymbus Auritus. HORNED GREBE. Some au- 
tumns, tolerably common. 
Podilymbus Podiceps. PIED-BILLED GREBE. Com- 
mon summer resident. 
Urinator Imber. Loon. Common migrant. 
Alle Alle. DovEKIE. Rare visitor, but has been 
taken here on several occasions; supposed to 
have been driven from the coast by a storm. 
Larus Marinus. GREAT BLACK-BACKED GULL. 
Common in spring and fall. 
Larus Argentatus. HERRING GULL. Common 
in spring and fall. 
Larus Delewarensis. RING-BILLED GuLL. Tol- 
erably common in spring and fall. 
Sterna Hirundo. ComMoN TERN. Very rare; 
we have known of but one specimen being 
taken here; that, in September, 1878. 
