30 University of Michigan 



Oporornis agilis. Connecticut Warbler. — This species is 

 usually considered a rare migrant in Michigan. At Birchwood 

 Beach it was noted from September 5 to 10, 1917; and May 

 30, 19 18, one was taken in the junipers on top of the first 

 dune. On three trips to Warren Woods, May 20, 22, and 27, 

 1918, the writer saw a dozen or more along the Galien River 

 and its flood-plain, but in May, 1919, it was rare in the same 

 woods. At Warren Dunes it was quite common about the 

 middle and north ponds from May 20 to 30, 1920. This 

 warbler usually feeds and nests on the ground, but when 

 flushed will light in low bushes or trees. 



Oporornis Philadelphia. Mourning Warbler. — This rather 

 rare migrant was first seen at Birchwood Beach September 6, 

 1917; and May 24, 1918, the writer saw five in a wet bog 

 along Willow Brook. At Warren Woods a few were observed 

 from May 19 to May 30, 1919, about the buttonbush ponds 

 and flood-plain of the Galien River, and on May 20, 1920, a 

 fine male was taken here. From May 13 to June 5, 1920, at 

 Warren Dunes, this species was seen almost daily about the 

 edge of the north pond, also in a small willow thicket which 

 borders the small brook running into that pond. 



Geo^.hlypis trichas trichas. Maryland Yellow-throat. — A not 

 very common summer resident of the region studied. It was 

 recorded at Birchwood Beach September 10, 1917, and rarely 

 after May 6, 1918. At Warren Woods a few were noted 

 from May 7 to 30, 1919. At Warren Dunes they were first seen 

 May I, and soon became quite common, as their habitat was 

 more extensive about the bushy ponds of the vicinity. 



Icteria virens virens. Yellow-breasted Chat. — This rare 

 summer resident was first seen near Birchwood Beach by Dr. 

 Hancock, near whose residence a pair nested in June, 1917. 

 May 19, 1918, a male was reported at the same place by Dr. 



