Laysan Duck Anas laysanensis

Highly range-restricted duck with a splotchy white “comma” around each eye. Found only on the Midway Islands, where it is the only resident duck. Forages on sand flats and small saline ponds and lakes on the islands, frequently consuming brine flies. Capable of flight, but typically only traverses short distances within islands. Gives various nasal and grating quacks.