| − | Like all parrots, Carolina parakeets subsisted on seeds, which included elm, pine, maple, oak acorns, and others. Apparently, it was the only North American animal of any kind which fed upon the cocklebur (''Xanthium strumarium''), a plant which contains a toxic glucoside<ref>http://www.outdooralabama.com/watchable-wildlife/Watchablearticles/parakeet.cfm</ref>. | + | Like all parrots, Carolina parakeets subsisted on seeds, which included elm, pine, maple, oak acorns, and others. Apparently, it was the only North American animal of any kind which fed upon the cocklebur (''Xanthium strumarium''), a plant which contains a toxic glucoside.<ref>http://www.outdooralabama.com/watchable-wildlife/Watchablearticles/parakeet.cfm</ref> |