208 IT. S. NATIONAL MUSEUM BULLETIN 217 



eral nestlings. The bird had a brood patch, but its testes had appar- 

 ently regressed from breeding size. The eggs would have been laid 

 about June 1. The resident range of this race extends in the arctic 

 forests from Mackenzie (Porsild, 1943) across Yukon and Alaska. 

 The Indian name is Tutchun Tsya. 



We looked carefully for signs of woodpeckers' work. Dead birch 

 or poplar, even on burned areas, seemed to rot rapidly and seldom 

 bore visible marks of woodpeckers. Dead spruce stumps were rare. 

 Several were noticed with holes suitable in size for flickers and 

 about six had old holes suitable for three-toed woodpeckers, but none 

 were found that were small enough to be appropriate for downy 

 woodpeckers. 



Family TYRANNIDAE: Tyrant Flycatchers 

 Sayornis saya yukonensis Bishop 



1 male June 5 weight 23.7 g. medium fat testes 3x7, 3.5x4.5 



mm . 



Leonard Peyton collected the male phoebe listed above as it flew 

 in to light on a tent frame in the village. Its testes appeared to be 

 near but not at breeding size. On June 6, Williamson saw a phoebe 

 carrying nest-building material near the cliff opposite the mouth of 

 Dave Lord Creek, but search there on two later occasions did not dis- 

 cover the phoebe again. The Indian name is Ni hut itsi. 



Yukon phoebes have not been found west of Anaktuvuk but evi- 

 dently extend across arctic Yukon and western MacKenzie. Since 

 they are usually east of the Cascade and Coast Eanges in British 

 Columbia (Munro and Cowan, 1947) they probably migrate through 

 that part of British Columbia. 



Empidonax traillii (Audubon) 



1 male June 12 weight 14.9 g. little fat testes 4x7, 4x5.5 



mm. 

 1 female June 17 weight 12.4 g. little fat eggs 3 mm. 



Francis Williamson reported that Traill's flycatchers were at Fort 

 Yukon when he arrived there on May 10, a date which seems early 

 for flycatchers to be in that northern locality. The first record near 

 Old Crow was of one heard on May 27 in the willow-alder brush 

 adjacent to the village. Thereafter one was occasionally heard or 

 seen. They were not easily discovered in the thick brush where they 

 were calling, but since Leonard Peyton located four by their singing 

 positions on June 12 they were apparently not uncommon. The 

 testes of the male specimen appeared to be at breeding size ; the female 

 contained a small egg but had not yet laid. Although nesting appears 

 demonstrated by the behavior observed during nesting time its date 

 is not known. 



