VOl '^n VI11 ] Wood, Warblers in Wayne County, Mich., in 1909. 23 



Cerulean Warbler (Dcndroica cerulea). — First seen in the 

 large flock of May 16, when 46 were counted. Last seen August 

 22, three adult males and a junior female. June 20, we were lo- 

 cating a Cooper's Hawk's nest in a long narrow piece of woods on 

 P. C. 24, Grosse Pointe Twp., when I heard the song of a Cerulean. 

 A systematic search disclosed two nests, one containing three 

 and the other four eggs; both were complete sets as incubation was 

 far advanced. 



Chestnut-sided Warbler (Dcndroica pensyhanica). — Three in 

 the river district, May 15, were the first seen, and two on the 27th 

 were the last of the spring migration. This species was the most 

 abundant of all the warblers in the flock of May 16. A conserva- 

 tive estimate, agreed upon by Mr. Herbert H. Spicer and the writer, 

 fixed their numbers at 300. Seen twice in summer. June 13, 

 while locating a Marsh Hawk's nest in a bushy tangle with many 

 openings grown to marsh grass in Gratiot Twp., a female Chestnut- 

 sided acted as if breeding, and a male was noted in the same local- 

 ity July 25. A junior male in the river district, September 12, 

 was the only autumn record. 



Bay-breasted Warbler (Dcndroica castanca). — Three males, 

 on the river district, May 15; also, three on the 19th and one on 

 the 27th. The eight in the large flock of May 16 were males. 

 Females were seen only May 23. Not observed in autumn until 

 September 12, when twelve were seen. A female was taken 

 October 16 and another on the 17th. No adults seen during the 

 autumn. 



Black-poll Warbler (Dcndroica striata). — This species has 

 always been rare in spring and our most common autumn migrant, 

 owing to its uniform and unfailing abundance. Two males on 

 the river district, May 29, and one male inland, May 23. Fifty- 

 nine were counted on the river district August 29 and consisted of 

 juniors and adults. The last were three junior birds, September 

 26, which was my last day afield until October 15. I believe the 

 four warblers seen October 16 were of this species but they were 

 not taken. 



Blackburnian Warbler (Dcndroica fusca). — Five males on 

 the river district, May 19, but only two males among the fifteen 

 seen May 27. Inland, 260 were counted in the large flock of May 



