The loss and fragmentation of habitats makes it difficult for migratory species to find places to rest and feed along their migration routes. These fragments of habitat may not be large or connected enough to support species that need a large territory where they can find mates and food. Aquatic species’ habitats have been fragmented by dams and water diversions. has been cut up into fragments by roads and development. Habitat fragmentation: Much of the remaining terrestrial wildlife habitat in the U.S. Other ways people directly destroy habitat include filling in wetlands, dredging rivers, mowing fields, and cutting down trees. Habitat destruction: A bulldozer pushing down trees is the iconic image of habitat destruction. ![]() ![]() Every day there are fewer places left that wildlife can call home. When an ecosystem has been dramatically changed by human activities-such as agriculture, oil and gas exploration, commercial development, or water diversion-it may no longer be able to provide the food, water, cover, and places to raise young that wildlife need to survive. ![]() Habitat loss-due to destruction, fragmentation, or degradation of habitat-is the primary threat to the survival of wildlife in the United States.
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