Examples from the Web for martlet
Commoner than the eagle as a charge is the martlet, a humbler bird which is never found as the sole charge of a shield.
The Martlet is another example of the curious perpetuation in heraldry of the popular errors of natural history.
Martlet and I both feel that we must have the north-west tower.The Young Castellan|George Manville Fenn
The martlet is the appropriate “difference” or mark of cadency for the fourth son.Fictitious & Symbolic Creatures in Art|John Vinycomb
At any rate, whether this be true or false, the martlet certainly is never represented in heraldry with feet.