作茧自缚
发表于 2025-3-28 17:16:34
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AROMA
发表于 2025-3-28 21:53:03
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OFF
发表于 2025-3-29 00:55:08
Some Ecological Aspects of Migrants and Residentspecies of tropical origin only temporarily visiting these breeding grounds (see review in Morse 1980). The importance of reproduction and survival rates and of migration costs in the evolution of migration has also received greater attention recently (Ketterson and Nolan 1976, 1983; Fretwell 1972, 1985; Greenberg 1980; O’Connor 1981, 1985).
Abominate
发表于 2025-3-29 04:30:29
Nutrition and Food Selection in Migratory Birdsng migrants must choose from a broad range of foods differing in morphology and nutrient contents. In this chapter, I will review nutritional adaptations and aspects of food selection in migrants which appear to correspond to their migratory requirements.
的阐明
发表于 2025-3-29 09:12:25
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APEX
发表于 2025-3-29 14:00:48
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GRE
发表于 2025-3-29 16:20:08
Kapitel: Allgemeine Grundrechtslehrenolting area usually differed from — and might even be opposite to — that to the wintering grounds; (2) all age and sex classes might not participate, (3) molting sites were highly localized; and (4) the numbers and densities of birds involved were often higher than at any other time.
激怒
发表于 2025-3-29 20:14:38
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BALK
发表于 2025-3-30 00:27:36
Kapitel: Die Gerichtsbarkeit des Bundesstates have common requirements, e.g., for hyperphagia, fat deposition (as fuel for long flights), and migratory flight itself. Thus, it is likely that some of the regulatory mechanisms of migration will be similar in spring and autumn and others different.
奇思怪想
发表于 2025-3-30 04:44:06
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