Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Paul DeBenedictis
1961
23 Aug
Calypte anna
Botanical Gardens, Univ. of Calif., Berkeley, Calif.
visited Bot. Gardens to check hummers noted
2 Anna are present but seem to have shifted in position somewhat. The thistles at the far end of the bed are gone, so is the Anna.
Here a Selaesphorus sasir was seen on the cals, uncontented. The milkweed is almost gone,
and nothing appears to be occupying it. The second male territory is present occupied by a 2 Anna, who seems
to hold pretty much the same territory. Another Anna was found in the N.W. corner of the
area, about 30 yards from the male mentioned above. They were not seen to conflict. Few hummers
apparent now. The thistle is Cirsium occidentale
var. candidissimum, from Red Hill, Plumas Co., Calif.
In a second area geraniums grew abundantly, and,
being in full bloom, form an excellent food supply. Here,
in an area about the size of the range of one anna?
in the more open Calif. Bed, 3 males and 3
4 Selaesphorus sasir feed, and apparently staked
out ranges. 2 Anna + one? showed strong territorial
behavior. One bird diving, but probably a S. sasir.