Notes

01 February 1956 Comments Notes Displacement coition in the Mallard.--On ioth May, 1951, a t Clayton-le-dale, near Blackburn, Lancashire, I was engaged in watching the behaviour of a pair of Mallard (Anas platyrhynchos) tending fifteen young, which were newly hatched. T h e young fed fo...
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Notes

01 February 1948 Comments Notes DURING the years 1946 and 1947 I have noticed several species singing outside what appears to be their normal song-period as defined in The Handbook charts. Some of these variations are considerable, others less so. The particulars are as follows :-- NUT...
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Letters

01 October 1928 Comments Letters SIRS,---I read with much interest two notes on the stripping of lime twigs b y Rooks (antea, p . 36). I t would n o t be wise t o conclude t h a t every twig found in this condition had been barked b y Rooks. I have watched a squirrel stripping twigs in a...
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