Image from the Biodiversity Heritage Library.
Contributed by Harvard University, Museum of Comparative Zoology, Ernst Mayr Library.
| www.biodiversitylibrary.org
Transcription
Hirundo horreorum.
Maine (Lake Umbagog).
1873.
Sept. 3 All the Swallows have apparently gone. They left
very suddenly several days ago.
1874.
July 30. I have seen none for two days and think they have
left here.
Aug. 8. Still here.
" 25. Those, as well as all the other Swallows, collected
into immense flocks to-day and disappeared.
" 29. A few still remain, but I think all the other Swal-
lows have left.
Sept. 3. A few still about.