The Jacobin has the feathers so much reversed along the back of the neck that they form a hood, and it has, proportionally to its size, elongated wing and tail feathers.
Jacobin edo txotinodunak hain aldrebestuak ditu lumak lepo atzean, non txotino bat egiten zaion; eta, duen tamainurako, luzeak ditu hego eta buztaneko lumak.