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.
Nebraska State Bird. The Western Meadowlark (Sturnella neglecta) is a medium-sized blackbird, similar in appearance to the Eastern Meadowlark, that breeds in grasslands, prairie, pastures and abandoned fields, across western and central North America and into northern Mexico.