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The Gape-worm (Syngamus trachea Montagu) in rooks (Corvus Frugilegus L.)

Published online by Cambridge University Press:  06 April 2009

Charles Elton  and
Frank Buckland
Charles Elton
Affiliation:
From the (Department of Zoology and Comparative Anatomy, University Museum, Oxford.)
Frank Buckland
Affiliation:
From the (Department of Zoology and Comparative Anatomy, University Museum, Oxford.)
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Extract

During the early part of 1928, a census of the rookeries in the Oxford district was carried out by the Oxford Bird Census organised by Mr E. M. Nicholson. This work raised a number of problems, of which one of the most important was that of natural checks to the numbers of rooks. Although shooting of the young rooks is one of the greatest checks on their population, Mr Nicholson's observations showed that there must also be a mortality amongst the nestlings. Lewis (1925, 1926 b) has shown that gape-worms are common in starlings (Sturnus vulgaris), and it seemed possible to us that this parasite might also be sufficiently common in rooks to cause deaths among the young birds. The gape-worm had already been recorded from the rook by Lewis (1926 a) and Baylis (1928), so that the possibility seemed well worth investigating.

Type
Research Article
Information
Parasitology , Volume 20 , Issue 4 , December 1928 , pp. 448 - 450
Copyright
Copyright © Cambridge University Press 1928

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References

REFERENCES

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