For several years Robert Mount and James Dobie told me about a Great Blue Heron (Ardea herodias) colony, located in a single tree on the eastern side of Interstate-65, south of the Pintlala Exit, Montgomery Co., Alabama. I finally located it on 25 March 1985, about 1 km south of Hooper Academy. The colony was in a single, dead osage orange tree (Maclura pomifera) situated in a small pond, about 25 m in diameter. There were 10 nests in the tree, when I first saw it. In subsequent years, it has varied from 10 to 18 nests (Table 1). On 12 June 1997, only four nests were present with only one occupied by a single, large, nestling.