Levels of fecal corticosterone in sandhill cranes during a human-led migration

Barry K. Hartup, Glenn H. Olsen, Nancy M. Czekala, Joanne R Paul-Murphy, Julia A. Langenberg

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Fourteen captive-reared greater sandhill cranes (Grus canadensis tabida) were conditioned to follow ultralight aircraft to promote migration between Wisconsin and Florida (USA) after release. Fecal samples were collected throughout the training period in Wisconsin and during a 1,977-km human-led migration to Florida to determine fecal corticosterone (FC concentrations by radioimmunoassay. The mean (±SE) FC concentration during the training period was 109.5±7.5 ng/g and was representative of baseline levels recorded previously from sandhill cranes. Fecal corticosterone concentrations increased in early migration compared to concentrations 1 mo prior to departure (P<0.01) but were not different from baseline concentrations at the end of the 6-wk migration period. The variability of FC concentrations in individual samples was greater throughout the migration than the training period. Increases in FC during migration were modest and generally consistent with normal corticosterone elevations observed in migrating birds.

Original languageEnglish (US)
Pages (from-to)267-272
Number of pages6
JournalJournal of Wildlife Diseases
Volume40
Issue number2
StatePublished - Apr 2004
Externally publishedYes

Keywords

  • Fecal corticosterone
  • Glucocorticoid
  • Grus canadensis tabida
  • Health management
  • Migration
  • Radioimmunoassay
  • Sandhill crane
  • Stress

ASJC Scopus subject areas

  • veterinary(all)

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