How is concentration very important even in the animal world?
Answers
OVERVIEW
Many animals gather together in large groups for migration, breeding, or sheltering, and these concentrations can be vulnerable to disturbance. Identifying the most important sites is the first step in conserving animal concentrations. Approaches include The Audubon Society’s Important Bird Areas program, which recognizes the importance of migration stopovers and other areas where birds concentrate. Conservation Opportunity Areas include many, but not all, of the state’s animal concentrations. For animal concentrations, appropriate conservation actions depend on the species and site, but will focus on maintaining or restoring important habitat features.
Klamath Lake hosts the largest concentration of wintering Bald Eagles in the continental United States, with up to a thousand individuals. At Dean Creek Wildlife Viewing Area, numerous elk congregate in marshy fields during the winter. At many of Oregon’s mountain lakes and ponds, western toad tadpoles swarm in large masses in the summer, and begin to change into frogs and climb out onto land in large groups in the early fall. In Portland, crowds gather nightly every autumn to watch 35,000 migrating Vaux’s Swifts swirl and funnel into an old chimney at Chapman School, the largest known Vaux’s Swift roost in the world.
Estuaries and bays along the Oregon coast and the lakes of southeastern Oregon provide vital stop-over refuges for shorebirds migrating to and from southern wintering areas and nesting locations in Canada and Alaska. Lake Abert may support the largest number of Wilson’s Phalaropes in North America; up to 70,000 birds congregate here in late July.
People have long appreciated the spectacle of thousands or millions of animals gathered in one area. Oregonians enjoy wildlife viewing at several popular festivals that celebrate seasonal animal gatherings, including wintering Bald Eagles and migrating songbirds, shorebirds, and waterfowl.
Fish and wildlife often gather in concentrations for critical activities, such as feeding, breeding, or migrating. Some species breed in colonies, perhaps due to limited, specialized breeding sites or as a strategy to deter predators. Animals congregate when their food is concentrated, and migrating animals flock to a feeding site to refuel and rest.
Animals also might gather when an important resource is naturally limited in the landscape, such as fresh water in the desert or mineral springs in mineral-poor areas. Frogs and toads that breed in seasonal ponds tend to gather together for a short burst of spring breeding because they have a limited window of opportunity for egg-laying. When Pacific tree frogs gather to breed, a springtime chorus erupts as males sing to attract mates.
When animals gather in these large groups, they can become particularly vulnerable to habitat alteration and human disturbance. Because of the large number of individuals involved, any factors that impact highly critical sites can affect a large proportion of a species or an entire suite of species. The table below summarizes important habitat types and features for some of Oregon’s animal concentrations.
Answer:
Many animals gather together in large groups for migration, breeding, or sheltering, and these concentrations can be vulnerable to disturbance. Identifying the most important sites is the first step in conserving animal concentrations. Approaches include The Audubon Society’s Important Bird Areas program, which recognizes the importance of migration stopovers and other areas where birds concentrate. Conservation Opportunity Areas include many, but not all, of the state’s animal concentrations. For animal concentrations, appropriate conservation actions depend on the species and site, but will focus on maintaining or restoring important habitat features.
Klamath Lake hosts the largest concentration of wintering Bald Eagles in the continental United States, with up to a thousand individuals.
At Dean Creek Wildlife Viewing Area, numerous elk congregate in marshy fields during the winter. At many of Oregon’s mountain lakes and ponds, western toad tadpoles swarm in large masses in the summer, and begin to change into frogs and climb out onto land in large groups in the early fall. In Portland, crowds gather nightly every autumn to watch 35,000 migrating Vaux’s Swifts swirl and funnel into an old chimney at Chapman School, the largest known Vaux’s Swift roost in the world.
Estuaries and bays along the Oregon coast and the lakes of southeastern Oregon provide vital stop-over refuges for shorebirds migrating to and from southern wintering areas and nesting locations in Canada and Alaska. Lake Abert may support the largest number of Wilson’s Phalaropes in North America; up to 70,000 birds congregate here in late July.
People have long appreciated the spectacle of thousands or millions of animals gathered in one area. Oregonians enjoy wildlife viewing at several popular festivals that celebrate seasonal animal gatherings, including wintering Bald Eagles and migrating songbirds, shorebirds, and waterfowl.
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