. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 74 CALIFORNIA FISH AND GAME â s^'-J-. O "^ % ^^ "3 A ^ K^-^^.'^rOo SCALE IN METERS ] WET MARSH l^r^vj^t LODGEPOLE PINE 8 MARSH \- -"I SEDGE MARSH 0 {5 CONIFER FOREST C__]) BREEDING TERRITORY # CONFIRMED NEST SITE FIGURE 4. Locations of snipe breeding territories in Deer Creek Meadows, 1980. Winnowing Index Driving transects were run from April through mid-July. The first peak in winnowing activity occurred during th
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 74 CALIFORNIA FISH AND GAME â s^'-J-. O "^ % ^^ "3 A ^ K^-^^.'^rOo SCALE IN METERS ] WET MARSH l^r^vj^t LODGEPOLE PINE 8 MARSH \- -"I SEDGE MARSH 0 {5 CONIFER FOREST C__]) BREEDING TERRITORY # CONFIRMED NEST SITE FIGURE 4. Locations of snipe breeding territories in Deer Creek Meadows, 1980. Winnowing Index Driving transects were run from April through mid-July. The first peak in winnowing activity occurred during the first week of April, probably indicating the arrival of females (Tuck 1972). Counts fluctuated up and down through April and May. A second peak occurred in June (Figure 5). This peak may result from the continuing territorial display by some adult males plus displays from yearlings that are just reaching breeding maturity. Irrigated pasture creates new breeding habitat late in the season and attracts unpaired snipe to establish territories. This type of habitat is common throughout the breeding range and is generally used for summer grazing by cattle. We found that winnowing counts at sunset were significantly higher than morning counts (X2 = , P<). This agrees with Tucks (1972) findings and indicates this time period is best for conducting counts. Although the winnowing pattern through the breeding season was similar in 1979 and 1980 (Figure 5), the level of winnowing was significantly higher in 1980 (X^ = , ). Daily observa- tions for yakking and winnowing indicate lower variance in yakking counts throughout the day and during any count period except postsunrise. We believe that yakking counts may have value as a survey method to determine breeding pair densities. Further studies are needed to compare yakking counts to areas where territories have been Please note that these images are extracted from scanned page images that may have been di
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