Title: California fish and game
Identifier: californiafishga65_1cali (find matches)
Year: [1] (s)
Authors: California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game
Subjects: Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons
Publisher: (San Francisco, etc. ) State of California, Resources Agency, Dept. of Fish and Game
Contributing Library: California Department of Fish and Game
Digitizing Sponsor: Internet Archive

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26 CALIFORNIA FISH AND GAME
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Figure 1. Recoveries of 56 banded nestlings over a 4-year period following banding. Forty-eight of the recoveries came from mside the 40 km radius circle around Turlock. thirtv trap sites were then cleared of stubble and prebaited with chicken scratch. When dove use was evident, traps were set and checked each morning and evening. Traps were constructed of 2- x 1 -inch gauge welded wire, with entrance funnels located at both ends and a hinged door for removal of doves (Figure 2). The pre-season trapping period extended from Julv 9 to August 30. Sex is indistinguishable in recently fledged doves, but young are easily distin- guished from adults by the presence of juvenile wing coverts. Summer banding seems to be differentially selective for immature birds—those locally produced and those drifting through from northern breeding areas. Birds-of-the-year con- stituted 86.8% of the 957 birds banded in July and August (Table 4). Each pair of breeding doves can be expected to produce 6.0 to 6.8 young per season (Cowan 1952). The age ratio at the end of the breeding year, therefore, could be no more than 75 to ll'^/o young. The real age ratio during July and August

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