26 Bird Migration in the Mississippi Valley. 



Transient. First saw one male on May 26 and a second on the 27th, and twice 

 thereafter. Last seen on May 29. 



Kentucky Warbler (0. formosa). St Louis Summer so journer. First seen 

 on May 2, and the bulk of the birds were here on May 3. Jefferson not seen. 



Mourning Warbler (G. Philadelphia). St. Louis Transient. On May 16 

 first saw one bird. Jefferson Summer sojourner. On May 19 first saw one 

 male, and another on the 21st. May 25 Twice'seen. June 1 Has been seen 

 about a dozen times this Spring. 



Maryland Yellow-throat (G. trichas). St. Louis Summer sojourner. On 

 April 17 I heard five males for the first time. April 18 Saw sixteen males, 

 which were noisy until 8 a. m. May 1 Numbers of singing males were here, 

 but probably many individuals in transit among them. On May 5 their num- 

 bers were decreased by the departure of the transients. Jefferson Summer 

 sojourner. On May 12 first saw one male, and again on the 16th and 21st. No 

 more than three seen in any one day this Spring. 



Yellow-breasted Chat (1. virens). St. Louis Summer sojourner. On April 

 23 first saw this species, and both saw and heard it every day thereafter. 

 April 26 About one-fourth are present now, both male and female, and on 

 the 29th were still quite scarce. May 2 and 3 The bulk of the birds were 

 here. Jefferson Summer sojourner. On May 19 first saw one male, which 

 I shot ; a second was seen on the 21st, and was twice heard later in the 

 season. 



Hooded Warbler (M. mitratus). St. Louis Summer sojourner. First seen, 

 one in song on April 17. On May 2 they were mating. Jefferson Not 

 seen and probably does not occur. 



Black-capped Yellow Warbler (M. pusillus). St. Louis Transient. First 

 saw one male on May 9, and again on the 10th, one male. May 11, 14 to 18. 

 They were numerous, both male and female. May 21. Last one was seen. 

 Jefferson Transient. On May 12 but one was seen, and it was skulking in 

 some windfalls. No more until May 20, when the first flock was seen. Sev- 

 eral were seen on May 21 and aud again on the 23d. May 29. Last one 

 seen. 



Canadian Fly-catching Warbler (M. canadensis). St. Louis Transient. 

 First seen on May 14, when they were numerous, also on the 15th and 16th. 

 May 24. Last one seen. Jefferson Transient. First one seen on May 26 

 and again on the 27th, 28th and 29th, which was also the last one. 



Redstart (8. ruticilla). St. Louis Summer sojourner. First saw one in 

 song on April 17, and on the 29th it was very conspicuous in the woods, 

 both old males and females ; no young males yet. May 2. Dozens were met 

 with, and first males of last year, but by the 5th they were decreased by the 

 departure of the transients. Nest found on May 17. Jefferson Summer so- 

 journer. On May 10 first saw five males and two females. On the 12th 

 the bulk of the birds were here, but it was not the height of the migration ; 

 both males and females, about six of the former to one of the latter. May 

 17. The bulk of the females were here, and it was the height of the migra- 

 tion for the species. May 19. As numerous as all the other warblers 

 together ; mated, mating and nesting; everywhere in the woods. Saw be- 

 tween two and three hundred, both male and female, in about even numbers. 

 May 22. Bulk of the transients departed. 



