As a result of information given them by the late Mr. Good of Westport, that the Yellow Wagtail (Motacilla f. rayi) nested extensively on Mask and Carra, the late Robert Warren and Mr. Williams of Dublin proceeded in 1893 to investigate, with the results recorded by Warren.* Ussher also found the bird plentiful on Mask in 1895.! As a result of their investigations, we find in Ussher and Warren's B...

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