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The Canadian Field-Naturalist 



[Vol. XXXVI 



otherwise than silent? In August they appeared 

 again in increased numbers and besides living on 

 the ripening wild fruits they became more or less 

 flycatcher-like, sallying forth at passing insects 

 and catching them quite readily in the air. 



57. Vireosylra olivacea. Red-eyed Vireo. — 

 Abundant summer resident from May to the latter 

 part of September. Its persistent warble is one 

 of the commonest sounds of the woods. They 

 often sing well into August. Several nests were 

 found. 



- 58. Lanivireo solitarius. Solitary Vireo. — I 

 have met with the Blue-headed Vireo only on two 

 occasions, both in May. I was first attracted by 

 its song which seemed to my ear somewhat like 

 that of the Red-eyed Vireo yet sufficiently different 

 to induce investigation. There were longer 

 pauses between the bars. I found it in a small 

 poplar and easily identified it. A day or so later 

 I recognized another. They did not remain in 

 the neighborhood through the summer or I 

 probably should have found them again. 



Warblers. — There is no group of birds more 

 abundant than the Warblers. Every clump of 

 thicket or woods had its own population of birds 

 and amongst them were often several kinds of 

 Warblers. When I arrived in May, many of the 

 trees were just bursting into bud but the Warblers 

 were already in force and continued so into 

 July. The whole bird population seems to 

 dwindle in August so that with the exception of 

 the Redstart and the Myrtle the Warblers were 

 nearly missing altogether. About the middle of 

 September the woods became again tenanted with 

 the lively little birds. In the spring they are 

 constantly in song, and the males are in gaudy 

 plumage, but the majority of fall birds are in 

 immature or female plumage and silent, and 

 diflficult to find or to identify when discovered. 

 In general these remarks apply to all the Warblers 

 noted here. I arrived at the conclusion that most 

 of them are transient visitors at North Bay, 

 passing beyond to breed. The only actual 

 breeding records I have for the Warblers are for 

 the Redstart. It is quite possible that other 

 species of Warblers were seen but as they were not 

 taken or determined with certainty they are not 

 here noted. 



59. MnioHUa varia. BLACK AND White 

 Warbler. —Common . 



60. Vermivora ruficapilla. NASHVILLE 

 Warbler. Abundant. 



61. Vermivora peregrina. TENNESSEE Warb- 

 ler, Tolerably common. 



.62. Compsothlypis americana. Parula Warb- 

 I-ER Very common. 



63. Dendroica tigrina. Cape May Warbler. 

 —Rare, one seen and taken. 



64. Dendroica aestiva. Yellow Warbler. — 

 Very common. 



65. Dendroica caerulescens. Black-throated 

 Blue Warbler. — ^Very common. 



66. Dendroica coronata. Myrtle Warbler. 

 —Very common. Abundant in September. 



67. Dendroica magnolia. Magnolia Warb- 

 ler. — Abundant. 



68. Dendroica pensylvanica. Chestnut-sided 

 Warbler. — Very common. 



69. Dendroica castanea. Bay-breasted 

 Warbler. — Tolerably common. 



70. Dendroica fusca. Blackburnian Warb- 

 ler. — Very common. 



71. Dendroica virens. Black-throated 

 Green Warbler. — Very common. 



72. Seiurus aurocapillus. Ovenbird.— A rare 

 species in the North Bay neighborhood. I have 

 seen it there but once or twice though there is 

 much country that seems suitable for it. I regard 

 it as a rare summer resident. 



73. Oporornis Philadelphia. Mourning 

 Warbler. — Very common. 



74. Geothlypis trichas. Maryland Yellow- 

 throat. — Very common. 



75. Wilsonia pusilla. Wilson's Warbler. — 

 Tolerably common. 



76. Wilsonia canadensis. Canadian Warb- 

 ler. ^-Very common. 



77. Setophaga ruticilla. American Redstart. 

 — -The Redstart is the commonest Warbler. Its 

 numbers are perhaps double those of any other 

 small bird during its season and its voice is the 

 one most often heard. Long after I had learned 

 unmistakably a score of other Warbler songs the 

 Redstart continued to puzzle me with new at- 

 tempts and variety. It sings through May, 

 June and July, and it is not until August that it is 

 silent. Even then occasional notes are heard and 

 it is seen flitting about. I found far more Red- 

 starts' nests than those of any other species. 



78. Anthus rubescens. American Pipit. — One 

 of the most abundant of fall migrants. I have no 

 record of them either in spring or summer, but 

 about the middle of September they begin to 

 arrive in small numbers, increasing daily until by 

 the end of the month they are the most abundant 

 bird present. In flocks of 50 to 100 they swarm 

 the open clearings, feeding on the ground. They 

 are very active and seldom linger long in one spot. 

 Often for no apparent reason the whole flock will 

 rise in a weak vaccilating flight and seek another 

 part of the clearing. They perch on stumps, 

 bobbing their tails and the hinder ends of their 

 bodies with a regular teetering motion. The 



