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- 
erowned 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 
