411 REFERENCE · Wiktionary
Emlen funnel
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after S. T. and J. T. Emlen, who introduced the technique in 1966.
Noun
en ornithology A funnel-shaped orientation cage used to study the migratory instincts of birds.
en eponyms