Their question: Did females prefer males that possessed the bright red color signaling current and prior health?

Maybe she should have had sons, be'd always preferred males.

This is why the military prefers males in the 18-to-25-year-old range when there's combat to be done.

This seems to be the only case in Roman history where a named individual male is stated to prefer adult males.

Studies suggest that female flies of this species prefer larger males to smaller.

Many studies have shown that females prefer males with brighter red colouration.

Females seem to prefer males with great speed and agility rather than size, strength, or aggression.

Females have been shown to prefer large and more colorful males.

Another cost would be male competition, as females prefer victorious males.

Many enslaved families were broken up, as planters preferred mostly strong males for field work.