1908 ] ^ENT, Summer Birds of Southwestern Saskatchewan. 27 



Prof. Macoun called the birds of this region henryi, which I am inclined 

 to think was an error. Probably the bird we took on June 5 was migrating, 

 as I believe virginianus is the form found farther north in the tinibered 

 regions. 



87. Chordeiles virginianus sennetti. Sennett's Nighthawk. — Com- 

 mon in and near the timber belts. None had arrived on June 1, 1905, but 

 they were common on June 5, 1906. A female with eggs was taken in 

 the Big Stick timber on July 19, 1906. 



88. Tyrannus tyrannus. Kingbird. — Common. Found breeding in 

 the timber on Maple and Skull Creeks, also noted in rows of small trees, 

 set out along roadsides and about the ranches. Nests with eggs found 

 June 12, 1905, and June 25, 1906. 



89. Tyrannus verticaUs. Arkansas Kingbird. — Not quite so com- 

 mon as the preceding in the timber on Maple and Skull Creeks, nesting 

 principally in the larger trees. Nests found, empty on June 12, 1905, and 

 with fresh eggs on June 14, 1905, and Jime 18, 1906. Noisy and con- 

 spicuous birds. They seemed to disappear in July, as the others were not 

 able to collect any during that month. 



90. Sayornis saya. Say's Phoebe. — Uncommon; three pairs located 

 in 1905 and 2 pairs in 1906 about the ranches. A nest was found under 

 a bridge on May 30, 1905. Two nests with fresh eggs were found under 

 the eaves of buildings on June 5 and 10, 1905, and a nest with large young 

 was found inside a small shed on June 24, 1906. 



91. Nuttallornis borealis. Olive-sided Flycatcher. — On June 8, 

 1906, after a prolonged and very heavy rain fall, lasting several days and 

 causing Maple Creek to overflow its banks and flood the surrounding 

 plains, we noticed a heavy flight or wave of migrating small birds in the 

 timber along this creek. Among a number of species collected that day 

 and not seen again were 2 Olive-sided Flycatchers, probably belated 

 migrants. 



92. Contopus richardsonii. Western Wood Pewee. — Dr. Bishop 

 took an adult female in the Cypress Hills on July 27, 1906. 



93. Empidonax traillii alnorum. Alder Flycatcher. — Dr. Bishop 

 referred to this form an adult female which he took in the Cypress Hills 

 on July 27, 1906. This form may also have occurred in the timber on the 

 creeks, but none were collected there. Prof. Macoun called his birds from 

 this region traillii. 



94. Empidonax minimus. Least Flycatcher. — Very common in 

 the timber on Maple and Skull Creeks. All the small flycatchers that we 

 collected here were this species. One nest was found with 3 fresh eggs on 

 June 25, 1906. 



95. Empidonax wrightii. Wright's Flycatcher. — Dr. Bishop found 

 it common, with half fledged young, in the Cypress Hills, from July 25 to 

 30, 1906, and collected a number of specimens. Not collected elsewhere. 



96. Otocoris alpestris leucolsema. Desert Horned Lark. — Very 

 common on the prairies, particularly on the barren hills north of Maple 



