Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Pit elka, 1966
Pipilo fuscus
Berkeley, Calif.
14 April ad Pipilo fuscus Testis 15 mm 54.5
ψ No fat
10 April ad " " Ova to 3mm. Oviduct 52.3
φ No fat.
1/2 enlarged. BB clear,
sops, follicles recently dropped feathers evidently; 2 coll. foll's
possibly 3*. Evidently lost both clutch or laying period.
* may be atretic developed from earlier
enlarged and yolkly.
10 April ad " "
Testis (2 mm 55.9
ψ No fat
13 April let-y! " " Testis 11mm 55.0
ψ No fat,
attack and/or
Pair present, ψ trying fiercely to chase the
trapped ψ. φ pair mainly feeding, indifferent
to caged bird.
21 April α ad " " T 14 mm. No fat 57.5
24 April - Territorial scuffles and chases just to N g
house. A pair + 3rd bird, or at second pair
again present along E side of house. Neighbors
feeding station no doubt an important attractant.