Sparrow Identification Tree and House types

OK so I am a novice and hardly in a position to inform but some people have emailed asking how to tell the difference between house and tree sparrows so I thought to upload both should help to show their distinctive plumage

 

This is a tree sparow with his or maybe it is her chestnut cap and black cheek patches. The brown overall is slightly brighter than the house sparrow as I hope you will see.

 

Cocks and hen Tree Sparrows are alike and sexing is nigh impossible unlike the house sparrow where the difference in the sexes is obvious..

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Uploaded on April 11, 2010
Taken on March 17, 2010