Bald-headed Blackbird - anyone know the reason?

 Bald-headed Blackbird - anyone know the reason?

Observation - Bald-headed Blackbird - anyone know the reason?. Description: This female blackbird with a completely bald head & neck has been visiting my mother's garden in Westergate. I think the baldness may be due to feeding young but does anyone know whether this is so or perhaps another reason? It certainly looks very odd.

This female blackbird with a completely bald head & neck has been visiting my mother's garden in Westergate. I think the baldness may be due to feeding young but does anyone know whether this is so or perhaps another reason? It certainly looks very odd.