Comparison of vanishing bearings, orientation directions and ringing recoveries of spring migrant White-throated Sparrows (Zonotrichia albicollis)

@article{Able2005ComparisonOV,
  title={Comparison of vanishing bearings, orientation directions and ringing recoveries of spring migrant White-throated Sparrows (Zonotrichia albicollis)},
  author={Kenneth P. Able},
  journal={Journal f{\"u}r Ornithologie},
  year={2005},
  volume={131},
  pages={317-323}
}
This paper compares the vanishing bearings of White-throated Sparrows released from orientation cages and tracked visually, with the preferred orientation directions indicated by hopping in the cage immediately prior to release. These directions where then compared with the directions of recoveries of birds ringed during migration. The vanishing bearings were well-oriented and northward (6°). The orientation directions of the same birds in the cages were variable with a mean toward northwest… CONTINUE READING