First Description of a Double Clutch, and Interisland Movements of a Pueo (Hawaiian Short-eared Owl; Asio flammeus sandwichensis) in Hawaii, USA

The Short-eared Owl (Asio flammeus) is a globally distributed species occurring on almost all continents, with populations found in various combinations of temperate, tropical, continental, and island systems (Holt et al. 1999). In North America and Europe, Short-eared Owls are highly vagrant and nomadic, showing little to no recurring seasonal or annual site fidelity (Johnson et al. 2017, Miller et al. 2022). These populations are suspected to have declined over the last two decades (Booms et al. 2014).

Island-endemic subspecies of Short-eared Owls, such as the pueo (Hawaiian Short-eared Owl; Asio flammeus sandwichensis) in the Hawaiian Islands may exhibit higher site fidelity than their continental counterparts. Due to suspected population declines, the pueo is state-listed as endangered on the island of O‘ahu (Department of Land and Natural Resources 2005) and was recently classified as a Bird of Conservation...