Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
R. K. Selander,
1954
15
16 mi. SE San Cristobal, Chiapas, Mexico
April 18 collected today were in breeding condition, the only exceptions being the hermit thrush (migrant), the Heller jay, and, possibly, the junco. This was surprising as we had expected the birds to be far from breeding condition this time in the year.
This is interesting in view of the fact that the vast majority of birds at Tonala are not yet in breeding condition. There the control seems to be the start of the rainy season -- here other factors must be at work.
In driving to our new camp we first noticed juncos just before we reached camp -- around the small settlements of Dolores. The road continues past our camp for several miles, then winds down onto a flat area where there is a town located -- probably Tecpisca.
April 19 Hunted around camp in morning. At the edge of a stand of epiphyte-covered oaks I flushed a Caprimulgus which fluttered about 15 feet away and perched on ground shaking and uttering a low call. It flew up several times, each time moving a few feet.
After shooting it, a female, I found a white egg - shell & near the two nestlings of the Caprimulgus which I brought back to camp. The nestlings gave a soft "cheep" note -- but refused to eat insect parts which we offered. The gizzard of the female was filled with parts of large beetles and, perhaps,