BIRDS. 303 



identified by Mr. Dett Miller. He also says of a single specimen 

 taken at Rush Lake on August 5, "it is not a typical specimen but is 

 nearer noveboracensis, especially in measurements. If it were not 

 for its smaller size it might equally be refered to either form." 



110. Oporornis Philadelphia. Mourning warbler. — Michigan: 

 Common migrant and summer resident, lireeding north of latitude 

 43° but not found on Isle Royale. 



This species was a rare migrant on the Point, and was first seen on 

 August 17, when the writer called one out of a tangle of fallen tree 

 tops. The next and last one seen was at the edge of a poplar thicket 

 near camp. At Rush Lake the only one seen was on August 22, in 

 a brush pile in low woods in the clay country. 



111. Geothlypis trichas brachidactyla. Northern yellow-throat. — 

 Michigan: Common summer resident, breeding throughout the 



state with the exception of Isle Royale. 



Common throughout the sand regior in July and August and on 

 Story Island in July. This species was one of the common breeders 

 on Sand Point, and was found in the usual habitat, i. e., in grassy 

 swamps and adjacent thickets and on the edges of ponds. No nests 

 were found, but the young made their appearance about July 1, and 

 females were seen as late as July 20. At Rush Lake it was common 

 in the clay country as well as in the sand region. 



112. Wilsonia pusilla. Wilson's warbler. — Michigan: Scarce 

 migrant, not known to breed in the state. 



This species was a rare migrant in the sand region. It was fii'st 

 seen on August 20, when an adult male was noted in a willow thicket 

 near the end of Sand Point. This was the only adult bird seen, but 

 on August 22 several immature birds were observed in the tops of 

 the thick willow bushes near the edge of Long Lake, and on August 

 24 one was called out of a thicket at the edge of a wooded swamp 

 near camp. This was the last one seen. At Rush Lake, only one 

 bird was seen (August 2 ) in low. wet woods. 



113. Wilsonia canadensis. Canadian warbler. — Michigan: Com- 

 mon migrant but scarce summer resident, breeding north of latitude 

 44°. 



An uncommon migrant in the sand region. This warbler was one 

 of the earliest migrants, as an adult male was seen by Wood on July 

 30. This bird was in low heavy woods near the center of Sand Point, 

 and was called out of a big pile of white pine tree tops left by the 

 lumbermen the winter before. It was in fine plumage, with the ex- 

 ception of the first three primaries of each wing and the outside tail 

 feathers which were only half-grown. This was the only bird seen 

 until August 10, when a juvenile male was seen; and a very few more 



