22 Bird Migration in the Mississijjpi Y alley. 



Jefferson— Transient. On April 4 the first two were seen. The bulk of the 

 birds departed about April 11. The last one was seen April 15. 



Carolina Wren {T. ludovicianus). St. Louis. — A true resident. On sunny 

 days its call is often heard ringing through the woods. April 15 they had 

 nests or were building. Jefferson. — Does not occur. 



Bewick's Wren {T. bewicki). St. Louis. — Summer sojourner. First seen on 

 April 5, and on the 17th they wera in full numbers and very noisy. Jeffer- 

 son. — Not seen. 



House Wren(7'. ivdon). St. Louis. — Summer sojourner. I saw several for 

 the first time on April 17 and again on the next day. April 23 showed an in 

 crease, and by the 29th they were industrious songsters and mating. Jeffer- 

 son. — Summer sojourner. I first saw one on May 2, when it was singing with 

 spirit and perseverance. It was joined two days later by another, and on the 

 6th two more came, and on the 7th still more, but yet very few. On the 10th 

 they were still increasing slowly, and by tlie 12th no more came, and the Sum- 

 mer number was here. Not more than ten pairs about town. 



Winter Wren (^4. troglodytes hyemalis). St. Louis. — Transient. Once seen 

 on April 3. Jefferson. — Transient. First one seen in a marshy wood on April 

 4, and on the 28th three more were seen. May 12. — One was seen in the tam- 

 arac, and was probably very near the last. 



Long-billed Marsh Wren {T. palustris). St. Louis. — Not seen. Jefferson. — 

 Summer sojourner. First seen on May 21, but it may have come sooner, as 

 it occurs only locally and must be sought. 



Short-billed Marsh Wren (C. stellaris). St. Louis. — First one seen on May 

 16. Jefferson. — Undoubtedly occurs like the preceding, but was not seen. 



Black and White Creeper (J/, varia). St. Louis. — Summer sojourner. First 

 one seen in migration on April 29. May 3. — Singing at their old stands. 

 Jefferson. — Summer sojourner. May 3. — I first saw five at as many different 

 places, but not singing. On the 5th single ones would be seen every few 

 minutes, and on the 6th six or eight were seen. May 12. — Migration was at its 

 height, and no apparent change after this. 



Prothonotary Warbler (P. citred). St. Louis. — Summer sojourner. On April 

 20 I first found six at old stands and in song, and on May 2 they were mat- 

 ing. Jefferson. — Not seen ; probably does not occur. 

 Worm-eating Warbler (7J. vermivorus). St. Louis — Summer sojourner. 

 Breeding-place not visited until May 22, when a nest with incubated eggs 

 was found by Mr. H. K. Coale, and female shot. Jefferson — Does not occur. 

 Blue-winged Yellow Warbler (11. pinns). St. Louis — Summer sojourner. 

 First saw few in song on April 17. May 3, height of migration. — Jefferson — 

 Probably seen twice, but not certainly identified. 



Golden-winged Warbler (JI. chrysoptera). St. Louis — Summer sojourner. 

 On May 2 I first saw a fine male in song, and on the 14th and 15th four birds, 

 both male and female. Jefferson — Probably occurs, but not seen. 



Nashville Warbler (II. rvficapilla). St. Louis — Transient. May 2. — First 

 saw a fine male in song, and on the 3d six were seen, and these were the 

 last. — Jefferson — Transient. On May 10, first saw two males and saw only 

 five up to May 12. No more seen until on May 22, a party of six or eight. 

 May 20. — Last one seen. 



Orange-crowned Warbler (77. celata). Undoubtedly a few pass through 



