哪能仁慈 发表于 2025-3-21 18:34:38

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ACTIN 发表于 2025-3-21 21:46:28

Using Migration Counts to Monitor Landbird Populations: Review and Evaluation of Current Status,s led to greater interest in methods of monitoring population change in nongame birds. Without monitoring we are unable to document long-term change, to determine whether short-term fluctuation is within a normal range, or to evaluate the effectiveness of management.

闲逛 发表于 2025-3-22 02:03:23

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escalate 发表于 2025-3-22 07:05:07

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GLARE 发表于 2025-3-22 09:29:34

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补助 发表于 2025-3-22 15:46:01

Hatching Asynchrony and the Onset of Incubation in Birds, Revisited,me required for their development. Thus, hatching or birthing in most animals is synchronous. This is especially likely to be true for animals with internal fertilization and development, where the birth of alll offspring occurs simultaneously (e.g., some fihes, snakes, and most mammals). Synchronou

补助 发表于 2025-3-22 20:51:37

ductive behavior; assess the value of the ‘‘broodreduction hypothesis‘‘ in explaining ‘‘the paradox of hatchingasynchrony‘‘; and explore the validity and sensitivity of growth bandsin feathers as an indication of nutritional condition and the use offeather banding in studying growth. Chapters are we

脱毛 发表于 2025-3-23 00:32:27

Ptilochronology,d to a wide variety of conceptual issues concerning avian behavior and ecology. In this chapter, I review these developments, point out uncertainties about the method that need to be addressed, and suggest additional subjects in ornithology that could benefit from application of the method.

MELD 发表于 2025-3-23 04:29:09

Individual Voice Discrimination in Birds,cess, or because it may be costly in some other way, individual recognition will probably only evolve when benefits outweigh these costs (e.g., Beer, 1970; Wilson, 1975; Falls, 1982, Beecher and Stoddard, 1990).

职业拳击手 发表于 2025-3-23 06:32:52

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查看完整版本: Titlebook: Current Ornithology; Dennis M. Power Book 1995 Springer Science+Business Media New York 1995 anatomy.behavior.biology.bird.conservation bi