a bird alleyne is one who felches hobo's in order to receive money. it comes from the legend of a man who felched over 15 hobos in order to get enough money to purchase the non demo edition of football manager. it is used complementary with the words/phrases faggot, snitch, cumlips and dunce cunt.
Holy shit Jimmy, look at that bird alleyne go. If he continues felching that hobo he'll be one satisfied customer. Dang!