File:Guide leaflet (1901) (14579375590).jpg

Identifier: scienceguide1630amer (find matches)
Title: Guide leaflet
Year: 1901 (1900s)
Authors: American Museum of Natural History
Subjects: American Museum of Natural History Natural history
Publisher: New York : The Museum
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: IMLS / LSTA / METRO

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its order,and unlike the downy young of ducks and geese, is hatched naked andpasses more than a month in the nest. The young secure their foodby thrusting their heads down the parents throat. At first sight onemight easily imagine that the old bird was trying to swallow its offspring. When the young bird is a few days old, a thick black down beginsto appear on it. Shortly after this coat becomes complete, it is suc-ceeded by the flight plumage. This is dull brownish black, the glossyplumage of maturity being acquired later. As special adornments ofthe breeding season, both the male and female Cormorants don certainspiny, white nuptial feathers on the back or about the head and neck,while the bare skin of the checks and pouch becomes brightly colored.In Brandts Cormorant, as will be observed; the pouch is rich blue, andthe birds appear to distend it for the purpose of display. (Cormorants, like their near relatives, are virtually voiceless, a harsh, rasping call being their only note.
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z X o u. J -* u J £ -J o £> 2 Q 5 u < K o T3 0Q 2 a; < a 3 CO 3 o £ u S N DC «3 53 bC u, « > H is X! O fiu 0) Pi Q ►3 3 UJ J QQ h 1H ; > a .O »* 73 2 A 9 < 1 Lu ^ o od u ffl u. J Q DC 03 tt UJ s s D CO 15. SUMMER BIRD-LIFE OF AN IRRIGATED PORTIONOF THE SAN JOAQUIN VALLEY A T Los Bafios, in the San Joaquin Valley of California, the watersZ-A of the San Joaquin River are used to flood vast areas to create grazing land for cattle. The region IS naturally dry and arid,hut irrigation soon transforms the desert into a series of creeks, pondsand marshes. The desert plants are replaced by Sagittaria, Ranunculus,tules and cat-tails, and the desert birds give way to a remarkable assem-blage of water birds, whose local distribution is governed by the presenceor absence of water. Driving along a levee, which extends as far as the eye can reach, (heold and the new life are found to be separated only by the widt

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