I just recently returned from Southampton Island – at the northern end of Hudson Bay. I spent 3 1/2 weeks working on a project at East Bay Island, the largest Common Eider colony in the Canadian Arctic with ~5,000 breeding pairs. We caught and banded 500 birds (mostly COEI’s but also a few King Eiders). To catch them we strung salmon fishing nets, 100 m. long, on a cable strung between two 10 m. poles. As well as an aluminum band, we also attached coloured Darvic bands with numbers/letters on them for identification in coming years. As well, the females were afixed with coloured nasal tags so they could be monitored throughout this breeding season. [They sit continuously on their eggs except for a brief sojourn to the central pond for a drink.] These nasal tags are attached with a UV sensitive filament that will disintegrate, releasing the tags, by the end of the breeding season.
I spent one glorious day in a helicopter investigating the NE coast of Southampton Island, some large islands just north of it (White & Vansittart Islands), and Lyon Inlet on the Melville Peninsula looking for gull colonies (made up mostly of Thayer’s Gulls with a few Glaucous Gulls).
I have included a few pictures to give you an idea of the country.