The most common swallow in urban Greece is the Barn Swallow (Hirundo rustica).

The life span of a swallow depends on factors such as the quality and quantity of food intake and its ability to carry out migration journeys. It takes swallows about three (3) weeks to build a new nest, and the process is laborious. This is why it is very important that we preserve the nests they have built. Swallows return to their nests. Flying insects make up 99% of their food, and they can catch their prey mid-flight. They migrate to parts of Central and South Africa and return to Greece in the spring. Eighty-four (84) species of swallows have been recorded.

Swallows may be spotted in various different parts of the Park, mostly around the eucalyptus trees and the Buffer Zone, and they build their nests in the recesses of the buildings.