Image: Bulletin - Southern California Academy of Sciences (2010) (20504032985)

Description: Title: Bulletin - Southern California Academy of Sciences Identifier: bulletinsout10922010sout (find matches) Year: 1902 (1900s) Authors: Southern California Academy of Sciences Subjects: Science Publisher: Los Angeles : Southern California Academy of Sciences Contributing Library: Smithsonian Libraries Digitizing Sponsor: Biodiversity Heritage Library View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: WHITE-THROATED SWIFT BIOLOGY 25 Text Appearing After Image: Fig. 1. Nest, eggs, and developing chicks of White-throated Swifts: a - eggs show spotting by ectoparasite excrement, b - 8-9 day old chicks with developing semiplume feathers seen as subcutaneous dots, c - 23-24 day old chicks with grey semiplumes partially overgrown by incoming contour feathers, d - 38^-0 day old chick with sheathing still present at base of some dorsal contour feathers. population of White-throated Swifts (Marin 2003). This is less than the variation recorded for some other species of swifts (Gladwin and Nau 1964; Naik and Naik 1966). Nests and nest parasites All of the White-throated Swift nests observed at this location were shallow saucers of plant material and feathers glued together with saliva (Figure la). A strip of cellophane was incorporated into one nest. All the material was presumably gathered on the wing; construction of the nests was not observed. Two nests measured 8X8 cm, and 9.4 X 9.4 cm rim to rim and were 2.5-2.8 cm deep. New nests used for the first time contained less material and were often nearly torn apart by the normal movements of older nestlings. Nests that survived and were re-used in subsequent years (up to 5 successive years) became more substantial with the addition of new material each year. At the mouth of one of the other ventilation holes a dead young swift was observed tangled in Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Title: Bulletin - Southern California Academy of Sciences (2010) (20504032985)
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