ECOLOGY OF NORTHERN MICHIGAN. 121 



'adult female was taken July 22, with the tough thickened skin on the abdomen 

 characteristic of a breeding bird. II. 2. Often seen in an open woodland, 

 July 13 to August 12. III. 2. One specimen seen August 1. IV. 2. A young 

 male taken July 29. The song was heard in the evening and morning in 

 the woods at the foot of the cliff, but during the day the bird retired to the 

 alders along the river valley. It stopped singing the last week in July. 

 VI. A nest containing two eggs was found on the trail to Government Peak 

 July 26. 



87. Hylocichla fuscescens. Wilson Thrush. II. 3. Heard singing near 

 camp during the evening of July 18. IV. 2. Young taken July 22 along 

 Carp river. 



88. Merula migratoria. American Robin. II. 3. An adult male was 

 taken July 30, and another was seen near camp on August 10. III. 2. One 

 was seen July 20. III. 5. An adult male was seen on the top of the bluff 

 July 23. This is apparently a rare bird in the Porcupines. 



89. Sialia sialis. Blue Bird. III. 2. Several seen near the edge of the 

 cliff on August 10. III. 5. An adult female was taken July 19. "A nest 

 was found in a Norway pine stub on the top of the cliff July 23. The old 

 birds fed the young every 5 to 8 minutes during the half hour they were ob- 

 served. The parents were quite tame as they fed the young while I stood 

 within 15 feet" (Wood). 



2. ISLE ROYALE. 



The observations and records incorporated in the following notes were 

 made at the southwestern or lower end of the Isle, in the vicinity of Wash- 

 ington Harbor. A few observations were also made in the vicinity of Siskowit 

 Bay on the south coast. The time spent on the island covered the period 

 from August 16 to September 5, 1904. 



On account crf the lateness of the season, but little could be determined 

 concerning the breeding birds. The migrants were already abundant. 

 This was evident on account of the abundance of the Chipping Sparrow, 

 Sharp-shinned and Sparrow Hawks. Many of these migrating birds were so 

 abundant and of such general occurrence that little could be learned of 

 their habitat relations. Perhaps the limited extent of the island, as a feed- 

 . ing ground, emphasized the apparent abundance. 



1. Podilymbus podiceps. Pied-billed Grebe. II. Two were seen on 

 Washington river, August 17, and several more August 30. A 3''oung bird, 

 in the first plumage, was taken August 18, and young birds were again taken 

 August 24 and 25. 



2. Gavia imher. Loon. VII. Two were seen on Lake Desor, August 

 24, and again August 30. 



3. Larus argentatus. Herring Gull. VII. One adult was seen at Lake 

 Desor on August 24. IX. The rocky promontories were often white with these 

 gulls. They would swim about in the lake and then fly back to the rock. 

 X. These birds were very abundant in the harbor, where they were seen 

 every day. On August 19, a small island north of the mouth of Washington 

 Harbor was almost completely covered with them. On August 31, flocks 

 were observed feeding in the harbor. 



4. Merganser americanus. American Merganser. II. A young female, 

 in the down, and an adult, were taken August 31. An adult and five young 

 were observed on Washington river, August 31. VII. A young' bird, 

 in the down, was taken August 21. X. An adult bird and several young 

 were observed August 19. . 



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