The effect of The heath hen

Multiple causes The history of the heath hen is related by Bent (1932). We use here the summary and interpretation of that history presented by Simberloff (1988). Probably the best-studied extinction is that of the heath hen (Tympanuchus cupido cupido). This bird was originally common in sandy scrub-oak plains throughout much of the northeastern United States, but hunting and habitat destruction had eliminated it everywhere but Martha's Vineyard by 1870. By 1908 there were 50 individuals, for...

Effects of pest control

The sinuously elegant black-footed ferret (Mustela nigripes) provides an example of a species paying the price for the control of another. This account of its narrow escape from extinction is taken from Seal et al. (1989), Cohn (1991), and Biggins et al. (1999). The black-footed ferret once ranged across most of the central plains of North America from southern Canada to Texas. Its lifestyle is closely linked to that of the prairie dog (Cynomys leucurus), a squirrel-like rodent that lived in...