Bird Migration in the Mississippi Valley. 23 



each place in the Spring, but none were seen at either St. Louis or Jefferson. 



Tennessee "Warbler (H. peregrina). St. Louis — Transient. First seen on 

 April 25, and again on the 27th, a single individual in song. On May 2 num- 

 bers were seen and heard, and on the 3d was the height, of the migration, 

 which continued up to the 10th, and they were still numerous up to May 

 18. Last one was seen on May 24. Jefferson — Transient. First one seen 

 May 17. May 19. — No males seen yet this year ; females three times. May 

 22. — First saw six or eight single males, and they were the last seen. 



Blue Yellow-backed Warbler. (P. americana). St. Louis — Summer so- 

 journer. On April 17 first saw several in song. Jefferson — Summer so- 

 journer. First saw one or two in heavy timber on May 4, and on the 12th 

 only a few were here, after which none were seen. 



Cape May Warbler (P. tigrina). St. Louis — Transient. On May 2 first saw 

 a fine male in song. Jefferson — Not seen. 



Summer Yellow Bird (D. mtiva). St. Louis — Summer sojourner. First 

 saw*three on April 18, singing at old stands, and by the 19th many were in 

 song. On the 22d of April there was a decided increase, and by the 29th 

 they were mating, and were industrious songsters. May 1. — Numbers of sing- 

 ing males are here, and probably many individuals in transit among them. 

 This species has not yet attained that state of excitement which is incident 

 to mating when the females arrive in bulk. May 5. — Their numbers have 

 decreased owing to the departure of the transients. On the 17th nests were 

 found. Jefferson — Summer sojourner. On May 7 first saw about a dozen 

 males in as many places, and very noisy. May 8. — More numerous, and on 

 the 17th was the height of the migration. May 19. — Full Summer num- 

 bers ; nesting. 



Black-throated Blue Warbler (B. ccerulescem). St. Louis — Transient. Never 

 seen in Spring, but once seen in Fall. Jefferson — Transient. On May 3 I 

 first saw a beautiful specimen in the evergreens in my yard. It was not mo- 

 lested, and remained around for five or six days, and became quite unmindful 

 of our presence. This was' the first and only one seen until May 10, and on 

 the 12th, although they were not numerous, still it was about the height. 

 May 15. — Two were seen, and on the 17th the last one. 



Yellow-rumped Warbler (B. coronata). St. Louis — "Winter and transient vis- 

 itor. On January 1 two flocks were seen ten and twenty-two birds respect- 

 ively, most of which did not stay through the "Winter, though a few did. On 

 February 19, in an old graveyard, which has a fine growth of several kinds 

 of evergreens, I found a flock of fifteen, which had probably spent the hardest 

 part of the "Winter there; their characteristic, loud "cheek" was continually 

 heard. In the wood, which was populated by a flock on December 28, only 

 one was found on February 22, but the chief attraction for them, the berries 

 of the poison ivy, and which at the former date were quite abundant, were at 

 the latter date all gone. The first of the transients came March 22, and the 

 night of April 8 brought clouds of them. April 13 and 14 migration was at 

 its height, and on the 17th but few were seen. April 18. — About thirty were 

 found in four places. April 21. — Very numerous; in large flocks on the 

 Illinois side of the Mississippi, and the same on April 29. On May 2 the 

 bulk departed, and on the 5th the last one was seen. Jefferson — Tran- 

 sient. On April 11, as usual, this was the first warbler seen, and, strange to 



