Red-necked Phalarope

The red-necked phalarope (Phalaropus lobatus) is a small wading bird that in Norway breeds from the center to the north of the country, and can often be found in wetlands and ponds. Those that breed in Norway typically overwinter around the Arabian Sea, whereas those that breed in Iceland migrate to Central America for the winter season (source).

They have opposite gender roles: the females fight over the males, and leave as soon as they've laid their eggs, at which point the guys take over the incubating and chick rearing duties. They also tend to be polyandrous, meaning one girl can have several clutches per season, each with a different partner.

Red-necked phalaropes have the Near Threatened status on the Norwegian redlist, and have seen their population reduced by 15% or more the last 10 years. They're affected by climate change, but also by human activity, like the draining and destruction of their wetland habitats.