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.
The yellowhammer, also known as the northern flicker or yellow-shafted flicker, became the official state bird of Alabama in 1927. Soldiers from Alabama were nicknamed âyellowhammersâ in the Civil War due to their grey-and-yellow uniforms, which matched the colors of the bird. Alabama soon became known as the âyellowhammer state.â APPEARANCE: The yellowhammer is a medium-sized bird measuring 11 to 14 inches in height and 17 to 21 inches in wingspan. Typical adult weight ranges from 3 to 6 ounces.