Observations of transoceanic movements by Nankeen Kestrels Falco cenchroides and a catalogue of terrestrial birds interacting with offshore vessels in Bass Strait, Australia

Abstract

How terrestrial avifauna interact with offshore infrastructure is relatively understudied. The migratory pathway and movements over Bass Strait (an expanse of ocean between Victoria and Tasmania, Australia) for many terrestrial species remains poorly known. Whilst working in Bass Strait, I observed multiple terrestrial species flying over deep offshore waters, up to distances of 35 nautical miles from the nearest coastline. Some of these species utilised offshore vessels as temporary refugia. Of particular note are several observations of Nankeen Kestrels Falco cenchroides. These observations are discussed, alongside an empirical list of species observed during my engagement with the offshore industry.