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 November 1931
Comments Notes reference to this enquiry, a good many observers have not yet sent in their schedules and are now urged to do so in order that the great labour of collating the information may be commenced without delay. All schedules and communications with reference t...
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