Bird Migration in the Mississippi 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 

 last 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. 



Frairie 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. m. 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 11th, 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. neevim). 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. Last one seen on May 24. Jefferson — 



