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.
Yellowhammer (Northern Flicker) The Yellowhammer, (Colaptes auratus, Linnaeus,) a flicker, was adopted as Alabama official state bird on September 6, 1927. The bill to create a state bird was introduced in the 1927 legislature by Representative Thomas E. Martin, of Montgomery County.