Notes

01 March 1938
Comments Notes I HAVE paid particular attention to the singing of Crossbills (Loxia c. curvirostra) for some years, on and off, and I find that the song can be divided into four main varieties. In attempting to describe these songs below, I use the two sound descriptio...
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Notes

01 April 1933
Comments Notes ONE always associates the Raven (Corvus corax) with extreme intelligence, but not so a pair (or its yearly successors, for many are destroyed round here by gamekeepers, etc.) that breed in a secluded Denbighshire gorge, not many miles away from my home. ...
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