THE WRENS OF FAIR ISLE
SUMMARY A new race of wren, Troglodytes t. fridariensis , is described from Fair Isle in North Britain. The plumage of the upper parts of the wrens in the north‐east Atlantic area shows three lines of divergence from the typical race: (a) hebridensis‐setlandicus , (b) fridariensis‐hirtensis , and (c...
| Published in: | Ibis |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1951
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| Online Access: | http://dx.doi.org/10.1111/j.1474-919x.1951.tb05461.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1474-919X.1951.tb05461.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1474-919X.1951.tb05461.x |
| Summary: | SUMMARY A new race of wren, Troglodytes t. fridariensis , is described from Fair Isle in North Britain. The plumage of the upper parts of the wrens in the north‐east Atlantic area shows three lines of divergence from the typical race: (a) hebridensis‐setlandicus , (b) fridariensis‐hirtensis , and (c) borealis‐islandicus. The tendency of the Fair Isle stock towards the greyer mantle plumage of St. Kilda birds may be due to similar environmental conditions, or to “Sewell‐Wright effect” in small, isolated communities. The importance of the 25‐mile sea‐barrier separating Shetland from Fair Isle wrens is emphasized. |
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