abmigrationn.
/ˌabmʌɪˈɡreɪʃn/, U.S. /ˌæbmaɪˈɡreɪʃ(ə)n/ Ornithology.
The migration of a bird which was born and has wintered in one region to the distant summer breeding area of others of its species.
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migrationa1633
passage1747
migrating1815
bird migration1908
abmigration1923
1923 A. L. Thomson in Brit. Birds 16 276 Some such term as ‘abmigration’ might perhaps be used to describe the northward departure in spring, for a new summer area, on the part of birds which had made no corresponding southward journey in the previous autumn.
1953 New Biol. 15 54 Abmigration occurs when a bird (usually a young one), bred in this country and wintering here, accompanies foreigners which have also wintered here to their home countries in the Spring, instead of returning to its own British nesting grounds.
1996 D. May Feather Reports 153 Some of our native birds [sc. tufted ducks] will mate with these immigrants and go back home with them—a practice known as abmigration.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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n.1923