IT is well-known that a great many species of birds make use of old nests of the Magpie (Pica pica). I have several times seen examples of Carrion Crows (Corvus corone) doing so. In 1949, for the first time, I have had an example of Rooks (C. frugilegus) doing it. The Magpies built the nest in 1948 in the orchard at Morton Hall, near Oswestry. It was in a very old apple tree, the nearest tree to ...
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