ALTHOUGH many scattered notes on this subject may be found in the various ornithological journals, very little has hitherto been done to collect these separate records; and beyond a short note by Adolf Kricheldorff in the Zeitschrift fur Oologie, XIII., Jahrg., p. 10 (1903), " Ueber vote Variationen der Vogeleier," and a paper by F. C. R. Jourdain " On Colour Variation in the Eggs of Palsearctic Bir...

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