17 SEPTEMBER 1932, Page 12

That is one class. The second is the collector or

the man who works on behalf of the collector. The collector himself may be a man of science. He may desire to prove something, to test a migration theory, to add to his list of " specimens "- a grins word—which seldom visit Britain, to illustrate the progressive changes in plumage according to age and season. If he does his own collecting, he usually arms himself with a .410, since a 12-bore might injure the feathers or skin, and may be precise to shoot only the birds that he needs for some especial purpose. But this desire to secure birds in different plumages is as dangerous almost as the yearning of the otilogist for complete clutches of eggs with special markings or variation of markings ; and, of course, any rarity, even a comparative rarity such as the blue throat is always secured. This collector generally chooses for his hunting ground some quiet cache on the line of migration.