What is the common thread when comparing a coastal estuary used by migrating birds to a city park lake used by residents?

Answer

The immediate proximity of an easy escape route to a reliable food plot

Across all utilized water bodies, the common factor is the combination of easy access to water for safety and proximity to a reliable source of food, such as grass.

What is the common thread when comparing a coastal estuary used by migrating birds to a city park lake used by residents?
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