Anatomically Correct Siren?

I am interested in creating a reality based version of a creature from Greek mythology called a Siren.

Sirens were believed to combine women and birds in various ways. In early Greek art, Sirens were represented as birds with large women's heads, bird feathers and scaly feet

These were supposedly women that had the bodies of large birds, and lured men to them with their beautiful voices. Once the men were caught off guard, they would be devoured.

How could a creature with the following traits evolve?

1. Instead of making them human women, I am simply making them an all female species.
2. Their voices only affect men.
3. They only hunt one gender of a species, specifically male humans.

A list of all of the Anatomically Correct questions can be found here: Anatomically Correct Series

posted over 6 years ago

Incognito‭

-2 reputation 73 0 -1 0