BIRDS OBSERVED AT CAMBRIDGE, MASS. 3 



Herring Gull. Abundant Winter Visitant, November to 

 April. 



Common Tern. Casual in September. 



Wood Duck. Common Transient Visitant, March and 

 April ; August to November ; a few breed. 



Pintail. Casual Transient Visitant, April, September and 

 October. 



Green- winged Teal. Uncommon Transient Visitant, April; 

 September to November. 



Blue- winged Teal. Rare in spring ; very common, at 

 least formerly, August to October. 



Canada Goose. Common Transient Visitant, March and 

 April ; October to December. 



Great Blue Heron. Common Transient Visitant, April 

 and May; September to November ; occasional in 

 summer. 



Little Green Heron. Common Summer Resident, May 5 

 to September. 



Black-crowned Night Heron. Permanent Resident, most 

 common in August and September. 



American Bittern. Not common Summer Resident, April 

 15 to November. 



Sora. Very common Summer Resident, April 20 to Octo- 

 ber 20. 



Coot. Transient Visitant, rare in April; common Septem- 

 ber to November. 



Woodcock. Summer Resident, formerly common, fast be- 

 coming rare ; March to November. 



Spotted Sandpiper. Common Summer Resident, April 26 

 to September. 



Wilson's Snipe. Common Transient Visitant, April 5 to 

 May 5 ; September and October. 



Semipalmated Sandpiper. Very common in August and 

 September. 



Killdeer. Accidental Visitant; two instances. 



Semipalmated Plover. Rare in spring ; sometimes com- 

 mon in August and September. 



Bob- white. Common Permanent Resident. 



Ruffed Grouse. Common Permanent Resident 



