1911] The Ottawa Naturalist. 201 



While being a permanent resident, numbers of the local birds 

 move somewhat farther south in fall. On some of the first mild 

 days in spring I have noticed certain individuals of this species 

 producing a rather pleasing song. A case of erythrism in this 

 species is reported in The Ottawa Naturalist, vol. XXII, p. 

 64. 



164. Plectrophenax nivalis, Snow Bunting. An irregularly 

 common and abundant migrant and winter resident. They arrive 

 end of October (earliest 19th) and in November, and disappear 

 in March (latest April 18th). 



165. Calcarius lapponicus, Lapland Longspur. A migrant 

 of uncertain status, probably far less rare than supposed, as 

 they are difficult to see and flush, when on the ground, and often 

 wild and high up when on wing. First recorded here in 1890, 

 when some stayed in the company of Horned Larks {O. alpestris) 

 till May 25th, and again from October 3rd to November 18th 

 (W. E.'and F. A. Saunders). 



166. Pocecetes gramineus, Vesper Sparrow. A common 

 summer resident. Preeminently a bird of the plowed fields 

 and of the roadside, hence its popular name " Groundbird." 

 The first ones arrive about April 6th, and the last depart about 

 October 16th. 



167. Passerculus sandwichensis savanna, Savannah Sparrow. 

 A common summer resident and inhabitant of moist meadows. 

 Its high-pitched trill may be heard within the city limits, as near 

 the Isolation Hospital. Dates: 31st of March to 29th of Sep- 

 tember. 



168. Ammodramus savannarum australis, Grasshopper Spar- 

 row. This more southerly form seems to be among those that 

 are trying to extend their range northward. It has been re- 

 corded three times from our district : one seen at Hull by Mr. 

 F. A. Saunders, June 24th, 1898, and again by him in the rear 

 of the Experimental Farm on the 26th, 27th,' and 28th of the 

 same month. Then it was not reported again until 1909, when 

 Mr. C. N. Robertson and the writer found it on June 30th in 

 the northwest corner of the Experimental Farm. 



169. Passerherbulus caudacutus , Sharp-tailed Sparrow. One 

 was shot here in 1882 and subsequently identified by Dr. Coues. 



170. Zonotrichia leucophrys. White-crowned Sparrow. This 

 handsome finch is an abundant migrant here, passing through 

 Ottawa from May 1st to 23rd in spring, and from September 

 27th to November 1st in fall. An unusually early one was seen 

 by Mrs. R. D. Brown, April 12th, 1909. During the second week 

 of May their numbers and music attain their high-water mark. 



171. Zonotrichia albicollis, White-throated Sparrow. This 

 bird, which to most is but a voice which from its retreat in the 



