Heligoland trapA large permanently sited device for catching small birds for ringing, consisting of a funnel-shaped structure of wire netting on a wooden framework, several metres across at its open end. Bushes may be situated in the mouth of the trap to tempt birds on migration to settle. The birds are driven into the narrow end of the trap where there is a 'catching box'. The Heligoland trap can be an important item of equipment for a bird observatory, the one on the German island of Heligoland having provided the name.
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From Peter Weaver's Birdwatcher's Dictionary
Copyright © 1981 by Peter Weaver