a slight trendp = 0.054
Object preferences When it comes to object preferences, we investigated how much time the birds spend manipulating each object in the condition in which no apparatus was present (as this may be associated with a certain tool), and found a slight trend regarding the birds’ preferences for manipulating a particular object (Friedman X 2 r = 7.65, n = 8, df = 3, p = 0.054).