Bird Migration in the JftMa*pjM Valley. 25 



son Transient. On May 5 first saw one male. May 12. No males seen but 

 several females; only two males seen this Spring. May 19. None seen, and 

 hist one probably left about that time. 



Pine-creeping Warbler (D. pinus). St. Louis On April 21 first saw one 

 male among yellow-rumps and red-polls. Jefferson. On April 24, at six p. m. 

 I shot a male, which had been very lively in the top of an oak ; its stomach 

 was full of insects and it was quite fat. Saw no more until May 3, when theie 

 came a large flock of about fifty or sixty, both male and female. They showed 

 their creeping habits very plainly, but sometimes flew to the ground among 

 the red-polls. They were the most numerous warblers of this date, and were 

 the last that I certainly identified, though think I saw some young.birds or 

 females on May 19, which is about the time the last of the migrants should be 

 seen. So far as I know they are transient, though generally supposed to breed 

 as far south as this. 



Red-poll warbler (D. palmarum). St. Louis Transient. On April 13 first 

 saw one bird among some yellow-rumps. April 19. Many in song, and on 

 the 20th they were still more numerous, and on the 21st about equal in num- 

 ber to the yellow-rumps, with which they frequented the willow thickets and 

 watercourses. On April 29 they were still numerous, but by May 2 the bulk 

 had departed and only a few were seen. May 5. Last one was seen. Jeffer- 

 son Transient. On May 3 first saw about forty males and females ; silent and 

 continually on the ground as usual. May 4. Saw about six parties of from 

 three to five each, and on the 5th three or four more groups of twenty or 

 twenty-five birds in all. May 7. About the same, with a slight decrease, if 

 anything. May 10. Two seen, which were the last. 



Prairie Warbler (D. discolor). St. Louis Summer sojourner (local). First 

 seen on May 22, when I, for the first time, visited their breeding grounds, 

 which are about ten miles from the city limits. Jefferson Does not occur. 



Golden-crowned Thrush (S. auricapillus). St. Louis Summer soiourner 

 First seen on April 17, when they were numerous; old males in full 

 numbers and noisy until 10 a. rn. May 15 Three eggs. Jefferson Summer 

 sojourner. On April 28 I found the first ones in a tamarac swamp ; they were 

 in full song. First seen in hardwood timber were three on May 3, and no 

 more until the llth, and then only one. May 12 Numerous and about the 

 bulk. On May 19 they were as numerous as at any time, and continued the 

 same thereafter. 



Small-billed Water Thrush (S.imvius). St. Louis Transient. On April 21 

 first saw one male in a slough ; it was silent. May 2 Had increased, and it 

 was about the height of the migration ; they were in song. May 5 The 

 height still continued and was present up to the 10th. May 14 to 17 Still 

 numerous, but the last was seen on the 21st. Jefferson Summer sojourner. 

 First one seen on May 2. The bulk of the birds were here on the 12th, and 

 the height of the migration was on the 19th. 



Large-billed Water Thrush (8. motacilla). St. Louis Summer sojourner. 

 First seen on April 9. May 15 I found young in nest. Jefferson May oc- 

 cur, but not seen. 



Connecticut Warbler (0. agilis). St. Louis Transient. First saw one 

 bird on May 14 and again on the 18th. Lavt one seen on May 24. Jefferson 



