328 Trans. Acad. Sct. of St. Louis. 
21st of April, the bulk of the migrants passing between the 5th 
and 8th of May, at which time they swarm in the willows of 
the Missouri bottoms. They leave during early September and are 
rarely seen after the middle of the month. Some exceptionally 
late dates are as follows:—Oct. 6, 1901; Oct. 15, 1911; Oct. 15, 
1916, and Nov. 7, 1916. 
This wren nests in birdhouses, in crevices about buildings, 
in the pockets of discarded garments, in tin cans and in other 
similar situations too numerous to list. It also nests in the 
deep woods of the bottom lands and other wild places in nat- 
ural cavities in trees and deserted woodpecker holes. Five to 
Seven eggs are laid in May. 
NANNUS HIEMALIS HIEMALIS (Vieillot). Winter Wren. 
Irregular but not uncommon winter resident 
During those winters when the Winter Wren is present it 
may be looked for in timbered creek bottoms, ravines, thick 
brushy places and weedy roadsides. It is to be found in the 
thick cover of the Missouri bottoms and bluffs and in Swope 
Park and the Dodson region. During some winters it is fairly 
common and in others is either absent or present in very few 
numbers. Our records covering a period of about twenty years 
show that it is present from September 30 (1906, earliest) to 
April 19 (1908, latest), being commonest during the first half 
of October. 
CisTOTHORUS STELLARIS (Naumann). Short-billed Marsh Wren. 
Rather uncommon migrant and probable summer resident. 
This wren is seen most often in the Missouri bottoms about 
sloughs and grassy swamps. It has also been noted on the pral- 
rie regions and in the upper Blue Valley. 
All available local records show its presence here during April 
and in September and early October. Students should be om 
the lookout for breeding records, as both Marsh Wrens have 
been found nesting in the swamps of the up-river counties. 
TELMATODYTES PALUSTRIS IIAcus Ridgway. Prairie Marsh 
ren. 
Rather uncommon migrant and summer resident. 
This wren is present from the middle of April till early im 
May (in Jackson County) and again during late September 
and October. It occurs most commonly in the Missouri bot- 
