6. GREAT BLACK-BACKED GUhh— Lams marinus. 

 Rare Winter resident. Migration dates wanting. Keeps 



well off shore, usually in large flocks of Herring Gulls. Re- 

 ported from Lake Saltonstall. 



7. HERRING G\]hh— Lams argcntatus. 



Common Winter resident. First arrive late in August, last 

 leave early in June. Common from October to May. Comes 

 well up the harbor. May be seen in large flocks feeding on refuse 

 at the mouths of any of the sewers emptying into it, notably at 

 City Point. They sometimes fly well up West and Mill Rivers, 

 and up the Quinnipiac River to North Haven. At times found 

 in large flocks on Lake Saltonstall. 



8. BONAPARTE'S GVhL— Lams philaddthia. 

 Rare Fall migrant along the coast. No recent records. 



9. WILSON'S TERN (Common Ti^rn)— Sterna himndo. 

 Formerly Summer resident, now rare Spring and late Sum- 

 mer migrant along the coast. Still breeds along the coast to the 

 east of us, notably at Madison and Stonington. In foggy weather 

 apparently flies well inland up the rivers. 



TO. DOUBLE-CRESTED CORMORANT — Phalacrocorax 

 diloplius. 



Tolerably common migrant. Keeps well off shore, usually 

 from mid-July to November. Sometimes in April and May. 



11. RED-BREASTED MERGANSER— M^r^on^^r serrator. 

 Uncommon Winter visitant on salt water. 



12. MALLARD — Anas boschas. 



V'ery rare Spring, fairly common Fall migrant. 



13. BLACK DUCK — Anas obscura. 



Not uncommon permanent resident. Very common Fall and 

 Spring migrant, common Winter resident. First migrants arrive 

 late in August or early in September. Depart about the middle 

 of April. A few pair breed on the Quinnipiac marshes. This 

 duck is the first of the ducks to return in autumn. It frequents 

 both fresh and salt water. This species is nearly always to be 

 found on Lake Saltonstall in some numbers during migrations, 

 and is a well known game duck but not often taken from "duck 



