migratory

1. (of birds, etc) Migrating.Examples: "To cope with daily variation of environmental parameters, talitrids evolved a migratory behaviour, synchronized with tidal and nictemeral cycles, that enable them to locate the suitable patches of habitat on the shore (Pardi and Ercolini 1986)."; "Even among migratory species, only a few (Aglaura hemistoma, Abylopsis tetragona eudoxids, Beroe sp., Thalia democratica, Salpa fusiformis) crossed the thermocline and reached the bottom layer."not-comparable