Young male or female House Sparrow?

See this House Sparrow every day. It looks like a female house sparrow but it has black spots near its legs. Young males don’t normally look like this. It looks to be an adult. There is another sparrow like this with balck spots only near its legs. Young males normally only have it under their chin. I saw a half-white male House Sparrow a couple of days ago. All near his tail was white.

Cornell Lab of Ornithology

Cornell Lab of Ornithology