Shelduck moulting in breeding area.--On 9th July 1961, in an area of extensive fresh grazing marshes in north Kent, I noticed an adult male Shelduck (Tadorna tadornd) swimming along the edge of a large fleet. The knob on its bill had regressed, but it was otherwise in almost full plumage except that its wings were in an advanced stage of moult, there being only three primary feathers- in the left ...

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