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 pelican is Louisiana's official state bird and appears on the Louisiana state flag and the great seal. Disaster struck Louisiana in the 1960s when the use of pesticides caused the brown pelican, native to the area, to stop nesting along the Gulf coast. By 1966, the bird had completely disappeared in Louisiana.