Check the far side of the river for Black Guillemot. Don't forget warm, preferably waterproof boots, long underwear and rain gear. Some people have had success with citronella-based products. Be prepared for the insects and high cost. Churchill is not accessible by road, so everything is brought in by train or air, hence the high costs.
Insects are numerous and on warm days with little wind, they can be a real nuisance.
Notable birds that can be seen in the Churchill area include Ross's Gull Ross's Gull is the most sought after of the approximately 175 species which can be found in and around Churchill. It was first discovered in 1978, and returned in 1980, when a nesting pair was found. It has been seen every year since, though in some years it is definitely harder to find than others. You may have to check each spot several times in order to find Churchill's jewel. Northern Hawk Owl The Hawk Owl is a rare Churchill nester, occurring three times since 1988.