298 Trans. Acad. Sci. of St. Louis. 



1916-17 and 1917-18, only a few hardy birds remain to find 

 shelter in the dense cover of the Missouri bottom, undergrowth. 

 During open and mild winters a few may be found in the 

 hedges and weed patches of the prairie country. 



The northward movement begins late in February, but is not 

 marked by the characteristic waves, when great numbers are 

 here today and gone tomorrow, until three or four weeks later. 

 The Harris's Sparrow usually disappears by the first of May, 

 though during late seasons it may remain until the second or 

 third week (May 17, 1916; May 11, 1913, common). 



The notes of this handsome sparrow are querulous and pitched 

 in a minor key and though very similar to those of their travel- 

 ing companions, the White-throats, are readily distinguished 

 from them by the absence of a well-marked form. 



ZONOTRICHIA LEUCOPHRYS LEUCOPHRYS (J. R. Forster). White- 



crowned Sparrow. 

 Common migrant; not uncommon winter resident. 



The first "White-crowned Sparrows come down from the north 

 early in October and are present in numbers until the first or 

 second week in November, after which only a few scattered win- 

 tering flocks remain. They are again numerous from late March 

 or early April until the first week in May (May 14, 1916, latest). 

 Their haunts are the same as those of the Harris's Sparrow. 



ZONOTRICHIA LEUCOPHRYS GAMBELI (Nuttall). Gambel's Spar- 

 row. 

 Rather rare migrant and winter resident. 



A few scattered flocks of this subspecies are to be found on 

 the prairies of western Jackson County during winter, being 

 more numerous in open winters. 



To Mr. Dix Teachenor belongs the credit of discovering the 

 fact that these prairie birds are gambeli and not leucophrys as 

 supposed. Specimens were taken in the region southwest of the 

 Country Club on February 25, 1917. 



ZONOTRICHIA ALBICOLLIS (Gmelin). White-throated Sparrow. 

 Very common migrant. 



The White-throated Sparrow arrives from the south early in 

 April (March 28, 1898; March 25, 1905; March 23, 1907, earliest 



