Abstract
IN September 1907 I discovered two shallow grassy pools on the Preston sea merse, near Southwick, Kirkcudbrightshire, in which Apus was present. In one of these it was so abundant that when I raised my eleven-inch ring net out of the water it was half full of specimens, mostly full-grown. I searched many other pools in the same area but without finding it and, returning to the same pools a few days later, I found the edges covered with the shells and very few specimens left in the water. The gulls had discovered this mass of food and had destroyed most of the Apus. I have visited the area many times during the last forty years but not until this month, working the merse near the mouth of the Southwick burn, have I again seen Apus. My son found three specimens in a pool which then yielded us about thirty or more, and several other pools near the first produced small numbers, mostly immature.
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"Cambridge Natural History", 4, 34 (MacMillan).
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BALFOUR-BROWNE, F. Re-discovery of Apus cancriformis. Nature 162, 116 (1948). https://doi.org/10.1038/162116c0
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DOI: https://doi.org/10.1038/162116c0
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