House Sparrow, partially leucistic

Watching house sparrows on my bird feeder this afternoon when i saw an unusual bird, a sparrow looking bird with a white colour over most of its head. And so i read, Abnormal pigmentation is usually means there's been a glitch in the bird's genetic processes involved with deposition of pigments when the feathers are being formed but sometimes disease and diet can be factors that interrupt the pigment placement.

Done