culling
noun
[ ˈkʌlɪŋ ]
• reduction of a wild animal population by selective slaughter.
• "kangaroo culling"
cull
verb
• reduce the population of (a wild animal) by selective slaughter.
• "he sees culling deer as a necessity"
• select from a large quantity; obtain from a variety of sources.
• "anecdotes culled from Greek and Roman history"
Origin:
Middle English: from Old French coillier, based on Latin colligere (see collect1).