Ouwehands Zoo previously indicated that it absolutely disagreed with this. The animals were donated in 2009, when they had a closed leg ring. Such a ring is mandatory for endangered species. The ring contains unique information about where the bird comes from. According to Ouwehands, this could be shown at the time that the bird had not been taken illegally from nature, but came from a breeder. According to the zoo’s lawyer, some changes have occurred in flora and fauna legislation over the years, but Ouwehands previously simply acted according to the rules.