ICTERUS BULLOCKL 509 



cotton-wood by our camp containing' live, somo of which, iiowever, wore 

 unoccupied. In May we found numbers of them in tlie rich valley of the 

 Truckee, near Pyramid Lake, and observed that they were then subsisting 

 chiefly on the tender buds of the grease-wood {Obione cotifertifolia), in com- 

 pany with Ilcdijmdes melanocepkaltis, Pyranga ludoviciana, and some other 

 species. 



The nest of Bullock's Oriole is very similar in its structure and compo- 

 sition to that of the Baltimore (/. haltimore), but it is less frequently pendu- 

 lous, and seldom, if ever, so gracefully suspended. Its usual position is 

 between upright twigs, near the top of the tree, thus resembling more that 

 of the Orchard Oriole (/. spurius), which, however, is very diflPerent in its 

 composition. 



List of specimens. 



1, nost and cgg.s (2); Sacrameuto, Califoruia, June G, 1867. Nest in top of large 

 isolated cotton-wood. 



220, nest; Camp 19, West Humboldt Mountains, October 1, 18G7. In aspen- 

 tliicket. (Collected by Mr. J. D. Dague.) 



507, (J ad.; Truckee Reservation, May 15, 1SG8. 8J— 12|— (?)— 3/^. Upper man- 

 dible, black, the tomium bluish-wbite; lower, pale blue, slightly dusky toward end of 

 gouys; iris, hazel ; tarsi and toes, pale brownisb-bhie. 



808, nest J Truckee Reservation, May, ISGS. Nest on drooping branch of 

 willow. 



1057 (2), 1058 (5), nests and eggs ; Salt Lake City, Utah, May 27, 1809. Nests in 

 mountainmahogaiiy bush, 1,500 feet above camp. 



1001, (?«(/. (parent of No. 1057). 8 — 12^. Upper mandible black, tomium and 

 lower mandible line light blue; iris, brown; tarsi and toes, deep blue, with a faint 

 yellowish staiu. 



1005, nest and eggs (4); Salt Lake City, May 29,1869. Nest in maple-sapling, iu 

 wooded ravine. (City Creek Cailou.) 



1106, nest and eggs (2); Antelope Island, Great Salt Lake, June 5, 1809. Nest 

 in apple-tree, in orchard. 



li;?(t, nest and eggs; Antelope Island, June 7, 1869. Willow-copse. 



1178, 1179, uests and eggs; Salt Lake City, June 18, 1869. Mountain-mahogauj- 

 trees, 1,800 feet above camp. 



1310, iad.; Parley's Park, Wahsatch Mountains, Utah, June 28, 1809. 8J— 12. 

 Bill black, commissure and lower mandible fine light blue; iris, brown; tarsi and 

 toes, horn blue. 



1387, nest; Provo River, Utah, July 10, 1869. Thorn apple bush. 



1390, nest; Provo River, Utah, July 11, 1869. Thorn-apple bush. 



