"Prey availability" refers to the amount or availability of animals that other animals can hunt and eat. It basically describes how many prey animals are around for predators to catch and feed on. Full definition
This decrease in recreational and commercial fishing, similar to the effects of creating a marine reserve, could have resulted in increased prey availability for dolphins within the area. (treehugger.com)
Increased levels of hunting, forest loss and land conversion, land encroachment and selective logging negatively affect the birds through loss of nesting sites and reduction in prey availability. (sciencedaily.com)
When deciding where to launch their attacks, they balance prey availability with factors such as finding a good hiding place - just as serial killers do. (newscientist.com)