15. Where is or was:
i: a guineafowl worth ½?
ii: a partridge worth 1?
iii: a magpie robin worth 2?
iv: a heron worth 3?
v: a hornbill worth 5?
vi: a capercaillie worth 10?
vii: a bee-eater worth 25
viii: a woodcock worth 50?
ix: a nightingale worth 100?
x: a spectacled owl worth 25,000?