56 BIRDS OBSERVED AT CAMBRIDGE, MASS, 
Field Sparrow.—Common Summer Resident, April 15 to 
November 1. 
Vesper Sparrow.—Very common Summer Resident, April 
5 to October 15. 
Chipping Sparrow.—Abundant Summer Resident, April 15 
to October 25. 
White-throated Sparrow.—Very common Transient Vis- 
itant, April 25 to May 15; October 1 to November 10; a 
few winter. 
White-crowned Sparrow.—Uncommon Transient Visitant, 
May 12 to 22; October 1 to 20. 
Fox Sparrow.—Abundant Transient Visitant, March 15 to 
April 20 ; October 20 to November 15. 
J winso tenis common Winter Visitant; abundant Tran- 
sient Visitant, September 20 to November 25; March 20 
to April 20. 
Tree Sparrow.—Common Winter Visitant; abundant Tran- 
sient Visitant, October 25 to November 25 ; March 20 to 
April 20. 
Redpoll.—Irregular Winter Visitant, often very. ‘siasheal 
October 25 to April 10. 
Snowflake.—Common Winter Visitant, October 25 to 
March 25; abundant in migrations. 
American Crossbill.—Of irregular occurrence at all seasons. 
Pine Grosbeak.—Irregular Winter Visitant, frequently 
common; sometimes abundant November to March. 
Goldfinch.—Very common Permanent Resident. 
Purple Finch.—Permanent Resident, very common from 
March to October ; irregular, but at times abundant in 
winter. 
Rose-breasted Grosbeak.—Common Summer Resident, May 
10 to September 10. 
Towhee.—Common Summer Resident, April 25 to Octo- — 
ber 15. 
Indigo Bunting.—Rather common Summer Resident, May 
15 to September 25. 
Cardinal.—Casual ; two instances. 
Scarlet Tanager.—Rather common Summer Resident, May 
12 to October 1. 
