Sorry about the delay; I was out late. Good thing I did my digital sketch earlier.
Anyhow, mulling over the “two-legged dragon” status of the cockatrice made me do this, because the wyvern is a dragon with two limbs, but those limbs (while usually depicted as hind) are actually fore:
“Fore or hindlimbs? The chicken base suggests hind, but draconic lineage could make them fore…”
