Changes in diet and morphology of Finnish goshawks from 1960s to 1990s

  title={Changes in diet and morphology of Finnish goshawks from 1960s to 1990s},
  author={R. Tornberg and M. M{\"o}nkk{\"o}nen and M. Pahkala},
  • R. Tornberg, M. Mönkkönen, M. Pahkala
  • Published 1999
  • Biology, Medicine
  • Oecologia
  • Abstract We studied the morphology of the goshawk in northern Finland by measuring skin and skeletal characters of 258 museum specimens dated between 1961 and 1997. We predicted a decrease in the size of male goshawks from the 1960s because availability of their main prey, grouse, has decreased since then and grouse have been replaced in the diet by smaller prey during the breeding season. Based on the assumption that winter is the most critical period for females, we predicted that female size… CONTINUE READING
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