On the identity ofCeryle rudis syriaca

@article{Kasparek2005OnTI,
  title={On the identity ofCeryle rudis syriaca},
  author={Max Kasparek},
  journal={Journal f{\"u}r Ornithologie},
  year={2005},
  volume={137},
  pages={357-358}
}
  • M. Kasparek
  • Published 1 July 1996
  • Biology
  • Journal für Ornithologie
Ceryle rudis syriaca Roselaar, 1995 was separated from nominaterudis only by its longer wings. As variations in the wing length ofCeryle rudis follow Bergmann's rule, it is suggested thatsyriaca is not recognised as a separate named taxon. Die Trennung vonCeryle rudis syriaca Roselaar, 1996 als eigene Subspezies basiert ausschließlich auf der etwas größeren Flügellänge. Da gezeigt werden konnte, daß die Flügellänge des Graufischers derBergmannschen Regel folgt, wird vorgeschlagen,syriaca wieder… 
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Citation Type

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Study of the geographic variation in birds usually focused on morphologic variation, and the insights from the morphologic variation were used to solve the taxonomic problems (Johnson and Marten…
On the validity of Bergmann's rule
TLDR
The occurrence of Bergmann's rule in birds and mammals is reviewed, using only studies where statistical significance of the results was tested, to test whether sedentary birds conform to the rule more than migratory birds.

References

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Adult moult records support the sequence and duration of moult suggested by Douthwaite (1971) though no overall decrease of moul activity was recorded during the breedi...
Fundamentals of ornithology