What environmental factor directly increases the likelihood of a cormorant consuming a snake?

Answer

The overlap between their respective habitats and the local prevalence of small, aquatic reptiles

The likelihood of a cormorant encountering and consuming a snake is directly proportional to the overlap between their respective habitats and the local prevalence of small, aquatic reptiles.

What environmental factor directly increases the likelihood of a cormorant consuming a snake?
dietbirdPredatorsnakecormorant