BLACK-POLLED WARBLER 407 



Myers, September 25. Bahamas — Watling Island, September 28. 

 Dominican Kepublic — San Juan, September 27. Puerto Rico — Car- 

 tagena Lagoon, September 24. Barbados — October 20. Colombia — 

 Santa Marta region, September 29. 



Late dates of fall departure are : Alaska — Fort Yukon, September 

 18. Yukon — Macmillan Pass, September 7. British Columbia — Atlin, 

 August 27. Mackenzie — Leith Point, Great Bear Lake, August 29. 

 Alberta — Edmonton, September 25. Montana — Great Falls, October 

 3. Saskatchewan — South end of Last Mountain Lake, September 3. 

 Manitoba — Churchill, September 6 ; Shoal Lake, September 26. North 

 Dakota — Fargo, October 23 (bird banded) . Nebraska — Hastings, Oc- 

 tober 16. Kansas — Lawrence, October 23. Oklahoma — Norman, No- 

 vember 8. Wisconsin — New London, November 4. Iowa — Davenport, 

 October 4. Missouri — ^La Grange, October 13. Ontario — Ottawa, 

 October 11. Michigan — Grand Rapids, October 29. Ohio — Youngs- 

 town, October 21. Illinois — Murphysboro, October 20. Tennessee — 

 Nashville, October 23. Quebec — Fort Chimo, August 23 ; Montreal, 

 October 6. Newfoundland — Cape Anguille, October 3. Maine — Bath, 

 October 7. Vermont — Wells River, October 17. Massachusetts — Har- 

 vard, November 24. New York — Orient, November 20. Pennsyl- 

 vania — Doyleston, November 7. Virginia — ^Lexington, October 28. 

 North Carolina — Raleigh, November 6. South Carolina — Mount 

 Pleasant, November 14. Georgia — Athens, November 1. Florida — 

 Clewiston, November 24. Bahamas — Watling Island, November 9. 

 Puerto Rico — Cartagena Lagoon, November 26. 



Casual records. — The blackpoU has occurred several times in Green- 

 land. In 1853, one was shot near Godthaab ; a juvenile was collected in 

 Isua Lichtenfelsfjord on October 14, 1911, and two more were taken 

 there late in the same month ; on October 15, 1911, another juvenile was 

 shot near the Isua copper mine in the Ivigtut District ; and on Septem- 

 ber 18, 1919, a juvenile was shot near Narssarmiut in the Sukkertoppen 

 District. Several occurrences in Bermuda have been recorded: one 

 was seen March 12 to 15, 1901 ; six were seen October 12, 1929 ; and 

 one was seen October 21, 1929. On June 17, 1858, an adult male was 

 collected at Collico near Valdivia, Chile. It has been surmised that 

 this may have been an escaped cage bird. 



Destruction. — Lighthouses and high buildings have, at times, taken 

 heavy toll of the black-polled warbler and this species is nearly always 

 on the list of those striking. At Sombrero Key, Fla., they have been 

 reported to strike the lighthouse from April 14 to May 20 and from 

 September 25 to November 16. The highest number striking in spring 

 was on May 19, 1887, when 60 birds struck the light, of which half 

 were killed. The fall migration takes a heavier toll, for on the night 

 of October 14, 1887, 160 blackpolls struck, of which 95 were killed, 



