BIRDS. 299 



at the latter place. It was first observed on July 3, when a single 

 pair was seen in the willows at the margin of the large meadow at 

 the base of Sand Point. This pair acted like nesting birds and must 

 have had a nest nearby. The species did not become common until 

 August 1, when it was seen in company with other migrating warb- 

 lers. It was not seen after August 13. 



99. Dendroica caerulescens. Black-throated blue warbler. — 

 Michigan: Common migrant and summer resident, breeding north 

 of latitude 44°. 



This species was observed but once, on August 25, when two males 

 were seen on a low jack pine on Sand Point. These birds were with 

 a small flock of Cape ^lay warblers. It was found breeding in Iosco 

 County, in June, 1907, by Miss Harriet Wright, of Saginaw, and in 

 Ogemaw County, June 19, 1903, by E. H. Frothingham. Later in 

 the season it probably crosses Saginaw Bay to the Point in numbers. 



100. Dendroica coronata. Myrtle warbler.— Michigan: AVjun- 

 dant migrant and summer resident, breeding north of latitude 44°; a 

 common breeder on Isle Royale. 



Only observed on Sand Point, where it was a common migrant 

 after August 18. The first ones seen — near the end of the Point — 

 were all young birds and looked like sparrows with their dull streaked 

 coloration, but a close examination would reveal the yellow rump 

 patch. The first adult birds were seen on August 24. After this date 

 they were common and were generally seen in the taller jack pines, 

 sometimes in company with the Cape May and bay-breasted warblers. 

 Each flock of warblers was often accompanied by a family of chicka- 

 dees and red-breasted nuthatches. They were still common when 

 we left the Point. August 27.* 



101. Dendroica magnolia. Magnolia warbler. — Michigan: Abun- 

 dant migrant and summer resident, breeding north of latitude 44°: a 

 common breeder on Isle Royale. 



Only observed on Sand Point, where it was a common migrant. 

 The first one, a young male, was seen, on August 19, in a dense willow 

 thicket near the end of the Point. On August 24, the species be- 

 came common in the thickets all over the Point, and many were still 

 there when we broke camp on August 27. It was not observed out- 

 side of the swamps, and could only be seen by calling. 



102. Dendroica pennsylvanica. Chestnut-sided warbler. — Michi 

 gan: Abundant summer resitlent, breeding locally throughout the 

 state with the exception of Isle Royale. 



Evidently a rare breeder in the sand region; not observed on Stony 

 Island. On Sand Point, July 29, an adult male was heard singing 

 in a bushy clearing, where no doubt it had a nest. On July 22, an 



