Cold agglutinin disease. Cold agglutination - at body temperature, the antibodies do not attach to the red blood cells. At lower temperatures, however, the antibodies react to Ii antigens, bringing the red blood cells together, a process known as agglutination.
American Robin (Turdus migratorius). The robin red breast was designated as the state bird of Michigan by House Concurrent Resolution No. 30, the Senate concurring, on April 8, 1931.
Willow Ptarmigan plumage will change with the seasons. Willow Ptarmigan (Lagopus lagopus). There are actually three species of ptarmigan in Alaska but the Willow Ptarmigan is the most common of the three found in the state and has been the official State Bird of Alaska since 1955.laska has over 430 species of birds, the largest population of bald eagles in the nation, and the largest carnivorous land mammal in the world (the brown bear; the polar bear is considered a marine mammal).