The sanderling is a shorebird that feeds on insects and small crustaceans such as crabs. sanderlings that are beyond breeding age often stay in the southern feeding grounds and do not migrate north during spring and summer. what is the most likely reason that nonbreeding sanderlings remain in the southern feeding grounds?

They have enough food in the tropical region and are no longer searching for mates.

Explanation:

The most probable reason why they migrate is to mate. Hence any one that does not migrate is an in indication that it does not need a mate and there is enough food in the southern shore.

the answer is true .

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