Tebbutt's note on birds becoming " c a u g h t u p " in flocks of other species (antea, vol. xliii, p . 332) prompts me to record the following observations, which were made some years ago when I was living near Bury, Lancashire. Mr. Tebbutt gives examples of individuals or small parties of one species, when flushed with a flock of another species, " b e i n g quite unable to break a w a y " and "force...

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