A lively debate has recently taken flight within the pages of the prestigious natural sciences journal Naturwissenschaften. It all centres around the question of whether Raphus cucullatus, a.k.a. the (now extinct) Dodo might have been waddlingly plump or sprightly slim.
Here are some example papers from either side of the debate :
Note: The illustration shows detail from Roelandt Savery’s (1576-1639) depiction of a Dodo, presumably more or less representative of the bird as it appeared to the artist at the time.