. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. DUCK RENESTING STUDIES 19 usually comprise the bulk of the early nesters, but during 1956 the first nests found were those of cinnamon teal (Anas cyanoptera). This may be explained by the flooded condition of the marsh area which had inundated preferred mallard habitat. Apparently, most of the mallards were able to postpone nesting until conditions improved. Cinnamon teal habitually nest in the more upland grassy cover while ring-neck
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. DUCK RENESTING STUDIES 19 usually comprise the bulk of the early nesters, but during 1956 the first nests found were those of cinnamon teal (Anas cyanoptera). This may be explained by the flooded condition of the marsh area which had inundated preferred mallard habitat. Apparently, most of the mallards were able to postpone nesting until conditions improved. Cinnamon teal habitually nest in the more upland grassy cover while ring-necked ducks {Aythya collaris) and lesser scaup (Aythya affinis) construct their nests on matted vegetation in the marsh. In 1955, most nesting occurred in May and June and was over by mid-July. In 1956, it was nearly mid-June before the water receded, and cover became dense enough to i)rovide adequate nesting conditions for most species. The stud}- was completed on August 10. METHODS Nests were found by a systematic scardi of study units by three to six men with the aid of a dog. Active uests were marked to insure reloca- tion. Most nest trapping was accomplished with modified Bailey beaver traps designed by A. W. Miller (Figure 2). The Miller trap consists of a hoop whicli is held flat to an "A" frame in set position and flips 180 degrees when sprung. The hoop is spanned by 2-inch mesh netting and held in position by a trigger mechanism mounted on the "A" frame. The trap was sprung by striking the trigger with rifle fire. In initial trapping attempts some female ducks escaped from under the hoop, and it was necessary to devise a lock to hold the hoop flush with the ground aflcf the trap was sprung. An ordinary rat trap. FIGURE 2. Modified Bailey beaver trap used for capturing nesting waterfowl. Phofograph by William Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloratio
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