WOOD WARBLERS: Family Compsothlypidae [ 5 1 5 ] 



1916, with a grass snake in possession, its jaws filled with eggs (Becker). 

 Another note recorded a nest containing four eggs at Paradise, Wallowa 

 County, June 10, 1919 (Cantwell). Braly (ms.) took nests at Portland, 

 May 2.6, 1931, and Tygh Valley, Wasco County, May 30, 1931. Patterson 

 (ms.) in the years he has worked in the Klamath country reports six 

 nests between May 6 and 2.8. Records of fledgling young being fed by the 

 parents are quite common in our own notes and also occur in the manu- 

 script notes of other Biological Survey workers. 



In addition to these breeding records, various writers since Bendire's 

 time have published notes on the occurrence of the bird for all sections 

 of the State with the exception of the coastal counties. It has yet to be 

 detected on the seaward slope of the Coast Ranges or in the valleys 

 beyond, although it is a common species in Jackson and Josephine Coun- 

 ties in the upper valley of the Rogue, along the Umpqua in the vicinity 

 of Roseburg, and throughout the Willamette Valley. It arrives in May 

 and remains until late August (earliest date, May i; latest, September 9, 

 both Multnomah County). 



Wilson's Warbler: 



Wilsonia pusilla pusilla (Wilson) 



DESCRIPTION. "Similar to pileolata, but not so bright; wings and tail shorter, bill 

 broader and darker colored. Male: length (skins) 4.05-4.45, wing 1.09-1.64, tail 

 1.83-1.97, bill .2.8-. 35. Female: length (skins) 4.10-4.45, wing 1.05 -2.. 17, tail 1.81- 

 1.95, bill .31-. 35." (Bailey) Nest: On ground, in damp woods, made of grass and 

 lined with finer vegetation and hair. Eggs: 4 or 5 , usually 4, white or creamy white, 

 speckled with reddish or purple. 



DISTRIBUTION. General: Breeds from limit of trees in northern Canada south to 

 northern United States. Winters in Central America. In Oregon: Rare straggler 

 known from only one record. 



A SINGLE SPECIMEN (Jewett Coll. No. 685) collected December n, 1908, 

 on Government Island, is the only record of Wilson's Warbler for the 

 State. This bird was one that evidently lost its way on the southward 

 migration that normally should have taken it east of the Rockies. 



Northern Pileolated Warbler: 



Wilsonia pusilla pileolata (Pallas) 



DESCRIPTION. "Adult male: Crown glossy blue black; back bright yellowish olive 

 green; under parts vivid yellow; forehead often orange yellow. Adult female: 

 similar, but crown patch often wanting. Young: like adult male, but black of 

 crown nearly obscured by olive wash. Male: length (skins) 4.134.49, wing 2.. 17- 

 1.36, tail 1.85-1.05, bill .2.8-. 35. Female: length (skins) 4.13-4.57, wing 2.. 15-2.. 2.4, 

 tail 1.87-1.97, bill .30-. 3 5." (Bailey) Nest: Of leaves, weed stems, and grasses, 

 on or near the ground. Eggs: 2. to 4, creamy white, spotted with brown and lilac, 

 either over the entire egg or about the large end. 



