328 Trans. Acad. Sci. 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 prai- 

 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 on 

 the lookout for breeding records, as both Marsh Wrens have 

 been found nesting in the swamps of the up-river counties. 



TELMATODYTES PALUSTRIS ILIACUS Ridgway. Prairie Marsh 



Wren. 

 Rather uncommon migrant and summer resident. 



This wren is present from the middle of April till early in 

 May (in Jackson County) and again during late September 

 and October. It occurs most commonly in the Missouri bot- 



