Question

the passage of the migration of bird
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Answer 1

Answer:

Passage migrants are birds that stop off in the UK during their long journey north or south, such as green sandpipers and black terns. They use the UK like a service station, taking a few weeks during spring and autumn to refuel and rest before moving on.

Explanation:

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Answer 2

Birds migra te to move from areas of low or decre asing resources to areas of high or increasing resources. The two primary resources being soug ht are food and nesting locations.

Migrat ion carries high costs in predation and mortal ity, including from hunting by humans, and is driven primarily by availability of food.

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