84 NORTH AMERICAN FAUNA. [no. 19. 



Breeding .specimens from the Yukon lake region are indistinguish- 

 able in size and color from alaudinus from North Dakota. Those from 

 Haines and (xlacier are lai-ger in l)ill and other measurements, slightly 

 darker, and more butfy, but evidently belong to the same form. A 

 male taken at Skagway May 31 is identical in color with a female 

 savanna taken in Connecticut about the same date, but in measure- 

 ments intermediate between sandiDichensis and alaudinus. Young 

 birds from St. Michael and the Yukon below Camp Davidson resem- 

 ble closely the young of sava/ina in coloring, and have bills slightly 

 shorter and deeper than adult alaudln as from the Yukon lakes, but 

 are larger and have longer wings and tails than the latter. 



123. Zonotrichia leucophrys gambeli.' Intermediate Sparrow. 



Descending from the bleak, snow-covered rocks of White Pass, we 

 reached at Portage June 14 a country of a more luxuriant vegetation. 

 Here the intermediate sparrow appeared, and it stayed with us con- 

 stantly until we left Circle, August 20. At Fort Gibbon August 23 

 I saw one adult and one young. With the exception of the bank 

 swallow, this is the most abundant species inhabiting the Yukon Basin. 



At Log Cabin June 20 I took a laying female; on Windy Island 

 June 30 Osgood took a young, able to fly, and at Lower Lebarge I 

 shot one molting into first winter plumage. We found j'^oung 

 abundant in this plumage at Circle August 15-20, but saw no adults. 

 This species has two distinct songs. That most often heard is a very 

 mediocre performance, but the other, which I heard in its full perfec- 

 tion only on a hill at Caribou Crossing June 26, and about 2 a. m. on 

 Fifty-Mile River July 9, possesses all the sweetness and clearness of 

 the song of Z. alhicolUs. By July 15 the song season was practically 

 over, but I heard one bird singing as late as August 10. 



121. Zonotrichia coronata. Golden-crowned Sparrow. 



Osgood found the golden-crowned sparrow on the heights above 

 Glacier June 5. It was common at White Pass summit June 11-14, 

 and was the only bird we saw along the trail to Portage June 14. We 

 thought we heard it singing at Log Cabin. The song does not equal 

 those of others of the genus. Osgood found an almost finished nest 

 in a conifer at Summit Lake June 12. It was composed of sticks and 

 moss, lined with grass, and placed about 2^ feet from the ground. 

 The next day I shot a female that contained an Qgg ready for the shell. 



125. Spizella monticola ochracea. Western Tree Sparrow. 



At Haines I took a female June 2. At Caribou Crossing we took 

 two pairs June 29, one of them with a nest containing three fresh eggs. 

 The nest was buried in the moss at the base of a clump of willows in 



^ This is the species formerly known as Zonotrichia leucophrys intermedia Ridgway. 

 See Ridgway, Auk, XVI, 36-37, 1899. 



