Apparently the new edition of the Oxford Junior Dictionary has culled certain words concerning nature. Deletions included acorn, adder, ash, beech, bluebell, buttercup, catkin, conker, cowslip, cygnet, dandelion, fern, hazel, heather, heron, ivy, kingfisher, lark, mistletoe, nectar, newt, otter, pasture and willow.
Whaaat?! That's my whole childhood in a nutshell !