Notes

01 February 2011 Comments Notes One of the most likely forms of avian play involves a bird carrying an object into the air to repeatedly drop and catch it in flight. With some variations, drop-catch behaviour has been observed in raptors, gulls, corvids and possibly hirundines (Ficken 1...
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Notes

01 July 1942 Comments Notes THE following notes relate to a mimber of species, several of whose Status now appears to differ from that described in H. E. Forrest's Vertebrate Fauna of North Wales (1907) and Handbook to the Vertebrate Fauna of North Wales (1919). Unless otherwise st...
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Notes

01 April 1939 Comments Notes THE following few notes were made mostly during the summer of 1938, and are the result of short expeditions and visits to the two counties. CHOUGH (Pyrrhocorax p. pyrrhocorax).---It was pleasing to be able to count twenty-one together on the grassy slopes...
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