Going by allaboutbirds.org, the biggest difference is the size, and I know from seeing lots of finches on the windowsill that the one above is only a bit larger than a finch.
(I got the ID using the Merlin bird ID app by allaboutbirds.org, and then went and looked it up. XD)
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(I got the ID using the Merlin bird ID app by allaboutbirds.org, and then went and looked it up. XD)