THE BIRDS OF BOULDER COUNTY 239 



619. Bombycilla cedrorum — Cedar Waxwing. 



One taken by Bragg at Boulder, July 4, 1904, now in cabinets at the State Capitol. 

 621. Lanius borealis — Northern Shrike. 



Winter resident at edge of plains, not common. One in University cabinets flew 

 into an office in the courthouse at Boulder while chasing English sparrows and was cap- 

 tured. 



622a. Lanius ludovicianus excubitorides — White-rumped Shrike. 



Not uncommon resident of plains, but have no definite mountain records. 

 624. Vireosylva olivacea — Red-eyed Vireo. 



Rare summer resident. One taken at Boulder by Bragg, now in cabinets at State 

 Capitol. 



627. Vireosylva gilva swainsonii — Western Warbling Vireo. 



Summer resident. Taken by Sprague at Magnolia and by Minot. 

 629b. Lanivireo solitarius plumbeus — Plumbeous Vireo. 



Summer resident of foothills and mountains. Reported by Minot and Sprague and 

 one taken by this writer at Boulder. Minot says common up to 9,000 feet. 

 636. Mniotilta varia — Black and White Warbler. 



Recorded by Minot. 

 644. Helminthophila virginiae — Virginia Warbler. 



"At Boulder, common through the latter part of May" (Minot). 



646. Helminthophila celata — Orange-crowned Warbler. 



Recorded at Boulder by Minot and taken by Bragg. I saw two at Boulder, May'21, 

 1904. 



647. Helminthophila peregrina — Tennessee Warbler. 

 Recorded at Boulder by Minot. 



652. Dendroica aestiva — Yellow Warbler. 



Abundant summer resident of plains, less common in the mountains. 



655. Dendroica coronata — Myrtle Warbler. 



Bragg took one or two in migration in 1903 and I have seen a few since. 



656. Dendroica auduboni — Audubon Warbler. 



Common on plains in migration, common summer resident of higher mountains to 

 timberline. Minot reported it singly and in pairs several miles out from the foothills on 

 June 1, 1880. 



661. Dendroica striata — Black-poll Warbler. 



Rare visitor in Colorado. I saw one at Boulder on May 7, 1905, with full opportunity 

 to study it at short range and make sure of its identity. 



[674. Seiurus aurocapillus — Oven-bird. 



Minot recorded it at Boulder and Nederland, but italicizes the fact that it was "iden- 

 tified by notes only," which for so rare a record hardly warrants its retention.] 



675a. Seiurus novoboracensis notabilis — Grinnell Water-Thrush. 



"Present at Boulder, Nederland, etc., in the latter part of May," 1880 (Minot). One 

 taken by Bragg at Boulder, May 14, 1904, in cabinets at State Capitol. 



