28 University of Michigan 



the climax forest. A few were noted at Warren Dunes after 

 May II, 1920, among the hemlock and beech-maple woods. 



Dendroica striata. Black-poll Warbler. — A common fall 

 and spring migrant. At Birchwood Beach flocks of them were 

 noted after May 16, 1918. At Warren Woods a few were 

 seen from May 17 to 26, 1919. At Warren Dunes, where it 

 was rare, it appeared May 19, 1920, and was again seen 

 May 29. 



Dendroica fiisca. Blackburnian Warbler. — This species was 

 a rare migrant on the dunes, but was more common in Warren 

 Woods, where it was seen May 15, 19 18, and from May 7 to 

 30, 1919. At Warren Dunes it was noted only May 11 and 

 12, 1920. 



Dendroica dominica albilora. Sycamore Warbler. — This 

 rare migrant is also, possibly, a rare summer resident of the 

 county. April 28, 19 18, one was feeding in the lower branches 

 of a maple tree at Birchwood Beach. 



Dendroica virens. Black-throated Green Warbler. — This 

 common migrant was seen both spring and fall at Birchwood 

 Beach September 6 to 10, 1917, and May 2, 1918. At Warren 

 Woods many were noted from May 6 to 23, 1919, and at 

 Warren Dunes from May 10 to 25, 1920. They were usually 

 found feeding in the tops and middle levels of the trees, and 

 on the dunes preferred the hemlocks. 



Dendroica palmarum palmarum. Palm Warbler. — This 

 common migrant is also one of the earliest; at Birchwood 

 Beach the writer saw several September 24, 1919, and April 

 30, 1918. At Warren Woods it was abundant from May 8 

 to 16, 1919. In 1920 it was quite common at Warren Dunes 

 from May 3 to 19. This warbler is usually found on the 

 ground, walking and feeding among the bushes and more open 

 woodland. 



