The Mallard
In 1632 there was a drunken riot, when gates and doors were torn off, and the archbishop had to remind the college that 'Civil men should never so far forget themselves, under pretence of a foolish mallard, as to do things barbarously unbeseeming', and he went on to point out that more persons had died recently in All Souls than in other colleges.
Abbot's reference was to the celebrations that surrounded the college totem, the mallard, which was traditionally supposed to have flown out from an ancient drain when the foundations were being dug. The Mallard procession, for which a medal was struck, was held in 1700, 1800, and 1900 (possibly for the last time).
https://www.british-history.ac.uk/vch/oxon/vol3/pp173-193#h3-s17
The Griffine, Bustard, Turkey & Capon
Lett other hungry Mortalls gape on
And on theire bones with Stomacks fall hard,
But lett All Souls' Men have ye Mallard.
“Civil men should never so far forget themselves, under pretence of a foolish mallard, as to do things barbarously unbecoming.”