Download Wildlife Behavior and Conservation by Richard H. Yahner (auth.) PDF

By Richard H. Yahner (auth.)

Begins with in-depth insurance of natural world habit suggestions as they relate to conservation difficulties. issues will concentration mostly on dialogue, critique, and improvement of behavioral ideas, with specific consciousness given to released reviews on numerous themes in natural world behavioral recommendations as with regards to conservation and average historical past. he'll comprise an intensive checklist of references.

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Winter roosts have 13–200 black vultures and 43–429 turkey vultures. Vultures selected winter roost with coniferous trees to provide favorable microclimate. Because black vultures cannot smell well, if at all, and turkey vultures have a keen sense of smell, the information-center hypothesis has been given for the use of the same roost by both species of vultures (Wright et al. 1986). Turkey vultures find carrion and other food items in the morning, and this food information then is transferred to the more aggressive black vulture who capitalizes on the food.

2). Fur seals are found along the northern Pacific coast. When the breeding season approaches in spring, male fur seals come to shore and establish territories on shore; males defend harems, which usually average 16 females. Mating can span an average of 31 days; in males, sexual maturity can be delayed (as true of many polygamous species) until 7 years but only 3–4 years in females. Female fur seals come ashore in June–July to mate and have pups (Brown 1973). Most (90%) older females (6–10-year-old) that come ashore are already pregnant; these females give birth soon after coming ashore (within 0–3 days), and then become into breeding condition (come into estrus) about 4–7 days after giving birth.

Fur seals (family Otariidae) are probably the most conspicuous polygamous mammal, with males showing intrasexual competition via dominance behavior mammal (Brown 1973) (Fig. 2). Fur seals are found along the northern Pacific coast. When the breeding season approaches in spring, male fur seals come to shore and establish territories on shore; males defend harems, which usually average 16 females. Mating can span an average of 31 days; in males, sexual maturity can be delayed (as true of many polygamous species) until 7 years but only 3–4 years in females.

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