Study

Crushing carcasses at feeding stations appears to reduce deforming bone diseases in Cape vulture Gyps coprotheres chicks in South Africa

  • Published source details Richardson P.R.K., Mundy P.J. & Plug I. (1986) Bone crushing carnivores and their significance to osteodystrophy in griffon vulture chicks. Journal of Zoology, 210, 23-43

Actions

This study is summarised as evidence for the following.

Action Category

Provide calcium supplements to increase survival or reproductive success

Action Link
Bird Conservation
  1. Provide calcium supplements to increase survival or reproductive success

    A before-and-after study on a northern South African pig farm (Richardson et al. 1986) found that the incidence of osteodystrophy (a bone-deforming disease) in Cape vulture Gyps coprotheres chicks declined from an average of 17% in 1974-6 to 2.5% in 1983, following the establishment, in 1977, of a feeding station where carcass skeletons were crushed to provide small bone fragments. A total of 1378 chicks were examined over the study. The authors note that vulture colonies on game reserves not ranches had far lower levels of osteodystrophy (0-1%), probably due to the presence of bone-crushing mammals such as spotted hyenas Crocuta crocuta.

     

Output references

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