28 Bird Migration in the Mississippi Valley. 



Purple Martin (P. subis). St. Louis Summer sojourner. First saw four 

 at 2 p. m. on March 18. In the evening of April 3 the first martins came back 

 again ; none had been seen since March 18. April 29. They have steadily 

 increased, and the birds of last year have begun to arrive. The bulk came 

 day before yesterday, but it is not yet the height of the season. May 1. Not 

 yet the height of the season. June 16. Twenty -two pairs have taken boxes 

 in my yard, and one old pair is already feeding young, while the birds of last 

 year continued to arrive, mate and build until June 4. Their arrival this 

 year, not counting the scouts of March 18, may be said to cover a period of 

 two months from April 3 to first week in June. Jefferson Summer sojourner. 

 First seen on April 8, after which they steadily increased, and about April 27 

 were in full numbers. 



Cliff Swallow (P. lunifrons). St. Louis Summer sojourner. First seen 

 on April 14, and by the 29th had increased, but were not in full numbers. 

 May 1. About one-fourth here. May 3. Bulk at colonies. Jefferson Sum- 

 mer sojourner. First saw one on April 4, but no more until the 24th when a 

 second one appeared. April 28. For the first time are common, and the 

 bulk of the species is here. By May 7 most of the migrants had left and they 

 were in about Summer numbers. 



Barn Swallow (H. erythrogastrd). St. Louis Summer sojourner. First 

 seen on April 14. Jefferson Summer sojourner. First saw one on April 27 

 and on May 9, though more had arrived, they were still quite scarce. In the 

 evening of May 11 the bulk arrived, but it was not yet the height of the sea- 

 son. May 19. In full Summer numbers, but not very common here ; prob- 

 ably about ten or twelve pairs in the square mile upon which the town is situated 



White-bellied Swallow (T. bicolor}. St. Louis Summer sojourner. The 

 first I saw was a migrating party on April 26. Jefferson Summer sojourner. 

 On April 14 first saw three flying and circling over the Rock River at 3 p. 

 m. ; did not see any in the early part of the day, although I was out all the 

 forenoon. By April 7 four more had come, and on the 9th they were still 

 more numerous, The height of the season was about April 26. May 8. 

 Have nearly all gone in the last two days. May 8. Quite a large flock ar- 

 rived last night. June 1. They were seen every day. 



Bank Swallow (O. riparia). St. Louis Summer sojourner. On April 

 21 first saw a party of seven going north along shore. May 1. Have seen none 

 since. May 3. Bulk at colonies. Jefferson Summer sojourner. On May 5 

 first saw three. May 7. About three-tenths are here. 



Rough-winged Swallow (8. serripennis). St. Louis Summer sojourner. 

 First seen on April 3 and again on the 17th in pairs, at stands. Jefferson Not 

 identified. 



Scarlet Tanager (P. rubra). St. Louis Summer sojourner. On April 27 saw 

 one male at old stand and again on May 2. On May 3 I found one female and 

 three males at usual stands, in song. Jefferson Summer sojourner. First 

 saw one male on May 11 and again on the 12th.. They about doubled in num- 

 bers during the night of May 16, and the first female was seen on the 19th, 

 when the males also were a little more numerous. June 1. Young males have 

 come, but no building yet. 



Summer Red-bird (P. cestiva). St. Louis Summer sojourner. On April 

 26 first saw one male at old stand. Jefferson Does not occur. 



