Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
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Bill open
between songs
He not only opened his bill wide while singing, but, curiously
enough, kept it open between songs. There is no question as to which
G.E.
positively
sings full
song.
bird was which this time as they had not yet repeated on me the
tactics which Slow Solid and Sticky Prickly worked so successfully
on Painted Jaguar. Soon, however, both birds were high up in the tree,
the highest I have yet seen them,and thenceforth it was first one and
then the other alternately appearing and disappearing until it was
No eggs. impossible to tell tòther from which. No eggs in the nest.
Allen Hummer (During a part of this time an Allen Hummingbird was gathering
nesting act-cobwebs from the upper bank of the road, but I could not see where
ivities.
he took them, not being able to keep all of the territory in view at
the same time).
The rest of the day little attention was given by the birds to
the nest, but there was a lot of digging.
Digging
characteristics.
At one place near the glade where a mole has thrown up a miniat-
ure mountain range about 25 feet long, the thrashers have taken ad-
vantage of his pioneering efforts and have continued the good work
by scattering hardened slabs of top soil,loosened by the mole, in
all directions, digging up in the process bulbs of the Brodiaea
growing there naturally. (Wild Hyacinth, Cluster Lily, etc.).
At one point they have diverged to dig up some Fritillaria Ag-
restis (Stink Flower) which I had planted there above an underground
net-work of chicken-wire placed there to protect them from moles and
gophers. I knew that the quail and Gambel sparrows might eat some of
the leaves, but had overlooked the digging thrashers!
" Digger of
Diggers"
This California Thrasher should have been given the specific name
of Digger of all Diggers. In this work he uses his bill alone. I
have watched, in the aggregate, perhaps hours of digging, and never
once has either bird purposely moved anything with its feet. Practic-
ally all of its work is accomplished by rhythmical side sweeps of
the bill, first to one side and then to the other, as if the bird
were keeping time to the music of an orchestra inaudible to the