Pine siskins are moving through right now:
Lots of
purple finches this winter, too. It's very hard to determine an age and sometimes even gender on a purple finch. If you see a brown striped one, you can't tell if it's a fem or if it's a young male, since young males look like females until their second year. If you see a raspberry colored purple finch, it's a male sometime after its second year. Occasionally, though, you can fairly precisely determine age. This male was born two springs ago and is just starting to make the change from brown motley to raspberry glory:
