PLASMA CORTICOSTERONE LEVELS IN TWO SPECIES OF ZONOTRICHIA SPARROWS UNDER CAPTIVE AND FREE-LIVING CONDITIONS

@inproceedings{Marra2002PLASMACL,
  title={PLASMA CORTICOSTERONE LEVELS IN TWO SPECIES OF ZONOTRICHIA SPARROWS UNDER CAPTIVE AND FREE-LIVING CONDITIONS},
  author={Peter P Marra and Kristian Lampe and Bruce L. Tedford},
  year={2002}
}

• Peter P Marra, Kristian Lampe, Bruce L. Tedford
• Published 2002

-We compared the daily plasma corticosterone (B) profiles in captive and free-living White-throated Sparrows (Zonotrichia albicollis) and White-crowned Sparrows (Z. leucophrys) during their non-breeding period. Neither sparrow species exhibited significant die1 rhythms in the levels of corticosterone in captivity or under natural conditions, although the variations were suggestive of a rhythm. In each species, secretory profiles differed significantly between captive and free-living birds with… CONTINUE READING

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