Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Summary of Field Operations
Aerial census
Average brood size
No broods counted
Average clutch size
No nests located
Territory census (birds)
1948
2022
167
101
8.4
60
400
1949
510
47
12
27
32
222
1950
184
6.5
4
8.5
2
110