it was not attempted for several years. During the Easter term of 2006, the Mallard was knocked off its rafter by one of the pigeons which enter the Hall through the pinnacle windows. It was reinstated by students in 2016, and is only visible from the far end of the hall. Chair legs and bicycles The sceptre held by the statue of Henry VIII mounted above the medieval Great Gate was replaced with a chair leg as a prank many years ago. It has remained there to this day: when in the 1980s students exchanged the chair leg for a bicycle pump, the College replaced the chair leg. For many years it was the custom for students to place a bicycle high in branches of the tree in the centre of New Court. Usually invisible except in winter, when the leaves had fallen, such bicycles tended to remain for several years before being removed by the authorities. The students then inserted another bicycle. College rivalry The college remains a great rival of St John's which is its main competitor in sports and academia (John's is situated next to Trinity). This has given rise to a number of anecdotes and myths. It is often cited as the reason why the older courts of Trinity generally have no J staircases, despite including other letters in alphabetical order. A far more likely reason remains the absence of the letter J in the Latin alphabet, and that St John's College's older courts also lack J staircases. There are also two small muzzle-loading cannons on the bowling green pointing in the direction of John's, though this orientation may be coincidental. Another story sometimes told is that the reason that the clock in Trinity Great Court strikes each hour twice is that the fellows of St John's once complained about the noise it made. Minor traditions Trinity College undergraduate gowns are readily distinguished from the black gowns favoured by most other Cambridge colleges. They are instead dark blue with black facings. They are expected to be worn to formal events such as formal halls and also when an undergraduate sees the Dean of the College in a formal capacity. Trinity students, along with those of King's and St John's, are the first to be presented to the Congregation of the Regent House at graduation. College Grace Each evening before dinner, grace is recited by the senior