Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1544
Neo "gurgled". (True thrasher form again). N2 arose; Neo gazed
at the egg a moment, stirred it with his bill, settled firmly.
N8 went to the food dish and ate. When I offered her worms she
accepted readily and was given a good feed. We are now getting
down to business in thrasherlike manner and from the human view-
point, are seeing the thrasher nesting pattern unfolding and repeat-
ing itself--with an entirely different pair of birds--as revealed by
Brownie and his mates and the same human relationships developing.
Rhody, now mouseless--as seen from the outside at least--
was now sitting quietly on his take-off with nothing to do,
During the afternoon the thrashers, when observed, were at-
tending strictly to business up to 5:45 at least. I was then down
at the Scamell's watching Rhody present a mouse at various reflecting
surfaces of an automobile standing at the curb. Neo was singing
across the street at tree 8. I kept an eye on his doings also.
Soon a second thrasher joined him, whom I suspected to be N2, so I
went to the nest, finding it unoccupied--another divergence from
thrasher routine here. Half an hour later Neo was in the nest.
Mar. 15th.
Fair all day, but toward sunset, looking threatening.
The thrashers seemed to have their routine in good working order,
though I was away several hours, so observations are not complete.
No' failure to keep the eggs covered was seen.
Rhody seemed to be abroad much of the time, although he ate
his meat at the cage and, at 1:30, was seen bringing home a large
alligator lizard with full ritual. Near the mirror he spied a piece
of meat placed there a short time before and tried repeatedly to pick
it up while still carrying the lizard. He did not want to eat the
meat, because when the lizard was accidentally dropped (2 or 3 times)
he then was able to secure the meat. Instead of eating it, he tried
to pick up the lizard without dropping the meat. He finally decided
against the meat and resumed his ritual with the lizard alone.
Mar. 16th.
Heavy rain all the forenoon--perhaps also during the night.
Julio, without orders, placed a rubber mat to keep the rain off of
the thrasher nest, Neo being in it at the time and not leaving. I
feared the effect on N2 when it came time for her to take over.
At 10:30 I found the nest unoccupied. There were three
eggs; so N2 had laid one earlier in the morning. I had the cover
taken off at once and shortly N2 was on the nest. However, the
rest of the day, N2 seemed to shirk her responsibilities and Neo
did most of the incubating, but even he, when N2 failed to come on
call when he wanted relief, left the eggs exposed for indefinite
periods. Notwithstanding this defection on his part, it was he
that was the more faithful bird and he could be counted on to take
up the task even when it was not his turn, sooner or later.
In the afternoon I made a light framework and placed a sheet
of "flexoglas" (Wire cloth glazed with cellulose acetate) to form
a roof several feet above the nest. While placing this the nest was
unoccupied, but both Neo and mate took up their duties in due course
after the job was finished.
At 5:30 it was N2 on the nest.
At 6:05
Neo.
Rhody discovered me shortly after I went to the thrasher