Beetles in the plumage of birds.--On 25 th May 1959 I picked up a freshly dead Swift (Apus apus) on the sloping concrete bank of Hilfield Park Reservoir, Hertfordshire. On examining the bird I discovered a single beetle of the species Haltka ohracearightin among the feathers of the upper breast; it was just over 2.5 mm. in length. This beetle is a plant feeder and, as it is capable of flight, I as...

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