During a animal park visit I shot this photo of a whitish female House Sparrow. The one in the back is a normal colored female. They are free flying birds living of the food spoils in the zoo. Question is, is it a normal Sparrow with abnormal feather coloring or it is a hybrid. The beak also seems to be of a different color, reminding me of a canary. Any suggestions?
![Whitish House Sparrow Whitish House Sparrow](http://www.planetofbirds.com/wp-content/uploads/2012/02/Whitish-House-Sparrow-2.jpg)
Whitish House Sparrow