Image from the Biodiversity Heritage Library.
Contributed by Harvard University, Museum of Comparative Zoology, Ernst Mayr Library.
| www.biodiversitylibrary.org
Transcription
Accipiter velox.
Lake Umbagog, Maine. Accipiter ferox
1888 Flight
Sept. 15" A sharp thin passing across an opening at
the slime flew with a fluttering, slightly undulating
motion any like a Robin. In Michigan last
Spring I noticed this same Robin-like flight
on two occasions when the birds were in
dense woods passing low over the ground