What is the energetic trade-off that governs a cormorant’s decision on where to settle for the night?

Answer

The safety of a prime roost versus the energy cost of commuting to a favored feeding area the next morning

Cormorants balance the protection offered by a secure roost site against the energy expenditure required for daily travel to and from adequate feeding grounds.

What is the energetic trade-off that governs a cormorant’s decision on where to settle for the night?
birdanimalnightcormorantroost