Publish date: 28/10/2018Genetic analysis has been used to determine that Hawaiian Gallinule may be threatened by its reluctance to wander between islands. Publish date: 23/01/2018Scientists have taken advantage of an invasive species' spread in the Hawaiian islands to show how ‘genetic drift’ plays out. View all sightings* Bird News Pro and Bird News Ultimate subscribers receive full sighting details. Have you seen something interesting? Click Submit to share your rare bird sightings via our simple form.