Common goldeneyes are chunky, medium sized sea ducks. Males are 45-50 cm (17 in.) long and weigh about 1000 g (2.2 lbs.) and females are 40-50 cm (15 in.) and 800 g (1.8 lbs.). Both sexes have a bright yellow iris, hence the name “goldeneye”.
Species Knowledge Summary and Information Needs (document coming soon)