Golden-crowned Sparrow

While I still see plenty of Song Sparrows, late Autumn seems to be dominated by Golden-crowned Sparrows around here as most sparrows I see are Golden-crowned. While they aren't quite as cooperative as Song Sparrows are in the Spring, they do allow you to get fairly close.
I got two good opportunities at Fernhill Wetlands on Nov 27. First near the grove of trees next to Dabbler's Marsh (top image) and then later in some bushes at the southeast corner of Cattail Marsh.
The darker colors on the crown of the bird in the top image would indicate an adult Golden-crowned Sparrow although I have seen some with more defined crowns, while the paler crown of the bird in the lower two images would indicate a 1st winter Golden-crowned.