1911] The Ottawa Naturalist. 227 



236. Penihestes hudsonicus, Hudsonian Chickadee. A rare 

 fall migrant. Early fall records for this species are: October 

 31st, 1883, and October 20th, 1889. 



SYLVIID.^ -KINGLETS, GNATCATCHERS, ETC. 



237. i^^-gjt/w^ 5a/ra/?a, Golden-crowned Kinglet. A common 

 migrant and undoubted breeder. On June 3rd. 1909, Mr. 

 Kingston and I found it in song in a black spruce thicket in the 

 Mer Bleue. This is a very thin, wiry performance, something 

 like the song of the Blackpoll and Black and White Warblers, 

 becoming higher and more rapid towards the end, as though the 

 bird was rapidly running from the centre of the tree out along a 

 branch to its end. I found it in June and August, also, at Inlet, 

 Quebec. The earliest date for its arrival in spring is March 26th, 

 becoming most plentiful in April; in fall it comes again from 

 September 17th to November 12th. 



238. Regidus calendula, Ruby-crowned Kinglet. An abund- 

 ant migrant . Although much like satrapa in every way except- 

 ing song, it, to a great extent, keeps apart from it in migration. 

 It passes through here from April 15th to May 23rd, which latter 

 date would seem to indicate that some do not breed far north of 

 here. About May 1st their fine sonorous song can be heard on 

 all sides in Rockclift'e Park. They return through here from 

 September 15th to October 23rd. 



239. Polioptila ccerulea, Blue-gray Gnat-catcher. This 

 southerly form has been taken once by Mr. G. R. White previous 

 to 1881. Since there is an unmistakable tendency in some 

 southern birds to extend their range northward, perhaps this 

 will also become more common here in time. 



TURDID^ THRUSHES, BI.UEBIRDS, ETC. 



240. Hylocichla mustelina, Wood Thrush. This fine songster 

 is a rare summer resident. The Ottawa River is undoubtedly 

 the northern boundary for it in this part of Canada. On May 

 10th, 1908, one was singing all day in Mr. A. G. Kingston's 

 garden; on June 13th, 1904, I saw one in the Mer Bleue. 



241. Hylocichla fuscescens, Veery; Wilson's Thrush. A 

 common summer resident. In Beaver Meadow, at Chelsea, etc., 

 it is usually to be found in summer. Time of stay: May 3rd 

 (earliest April 21st) to September 19th. 



242. Hylocichla- alicics, Gray-cheeked Thrush. A rare mi- 

 grant. I have seen it in the woods beyond Beechwood, May 16th, 

 1905, and 23rd, 1907. It is the most elusive of thrushes and will 

 undoubtedly eventually be found to be commoner than supposed. 



243. Hylocichla ustulata swainsoni, Olive-backed Thrush. 

 A moderately common migrant and undoubted breeder in the 

 northern part of the district. It passes through here from May 



