I was thinking it probably means "not fed other turkeys", along with "turkeys may be kept 14 to a shoebox".
That second link does say something about being fed goats, so maybe the idea is that turkeys, in their natural habitat, are predatory pack animals like wolves or lions?
@bothwell started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I was thinking it probably means "not fed other turkeys", along with "turkeys may be kept 14 to a shoebox".