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Bird- Lore 



PLUMBEOUS VIREO 

 The Blue-headed Vireo of the Rocky mountain region is called the Plumbeous 

 Vireo. It comes into extreme western Texas and breeds from there west to Ari- 

 zona and north to Wyoming and South Dakota. It is a late migrant and its arrival 

 in the mountains of southern ^Arizona has been noted in different years from 

 April 30 to May 6, The first was seen at Colorado Springs, Colo., May 3, 1882 

 and at Loveland, Colo., May 11, 1889. 



CASSIN'S VIREO 



The Blue-headed Vireo of the Pacific slope has received the above name. 

 It is an earlier migrant than the Plumbeous Vireo and in southern Arizona it 

 arrives at least two weeks the earlier and passes on north to breed, while the 

 later-arriving Plumbeous remains and nests. The arrival of Cassin's Vireo in 

 southern Arizona has been noted in different years from April 6 to April 16. 

 It is present in the fall from about August 20 to the middle of September. The 

 average date of arrival at Columbia Falls, Montana, is April 28, earliest, April 

 26, 1895; last seen, September 12, 1895. In southern California the average date 

 of arrival is April 9, earliest April 4, 1896. Other dates of the first seen are: 

 Nicasio, Cal., April 5, 1876; Stockton, Cal., xApril 22, 1879, April 28, 1880; 

 Beaverton, Ore., April 17, 1885; Fort Klamath, Ore., April 28, 1887; Corvallis, 

 Ore., April 30, in 1899, 1900 and 1904; Tacoma, Wash., April 28, 1903, April 

 25, 1904, April 23, 1905 and April 18, 1907; Seattle, Wash., April 17, 1907. 

 Victoria, B. C, April 27, 1893; Okanagan Landing, B. C, May 4, 1906 and 

 April 29, 1907. The latest fall date at Los Angeles, Cal., is October 13, 1898; 



HOUSK WRENS 

 I'hiiloKraphed by J. C. Elson, Madison, Wis. 



