A seagull ate too big a fish and burst his gullet. A passing Kite chided him for being a bird but eating from the sea.
Every man should be content to mind his own business.
Townsend version
A seagull having bolted down too large a fish, burst its deep gullet-bag and lay down on the shore to die. A Kite saw him and exclaimed: “You richly deserve your fate; for a bird of the air has no business to seek its food from the sea.”
Moral
Every man should be content to mind his own business.
Larus et Milvus
Larus, cum piscem degluttisset, disrupto gutture, supra navem semianimis iacebat. Hunc autem cum milvus vidisset, “Digna sane tulisti,” ait, “quod volucris natus cum sis, supra mare vitam traducis.”
Perry #139