In Virgil, Scylla, the daughter of Nisus, is confused with the sea-monster, the daughter of Phorcys.
According to Roscher (in his Lexikon der Mythologie), who identifies the ciris with the heron, the story of Nisus and Scylla (like these of Acdon, Procne, Philomela and Tereus) was invented to give an aetiological explanation of the characteristics of certain birds.
Sparrowhawk accipiter nisus Up to 3 females seen on the trip.
Barn swallows (Hirundo rustica) were hunted by a Sparrow hawk (Accipiter nisus).
Megara was captured, and Nisus, who died fighting (or slew himself), was changed into a sea-eagle.