I think Australorp, age, sex?

[T'sbird]

We found this chicken about a week ago. (I have of course posted about finding her, and been watching lost ads, but no one has claimed her yet.) After doing a bit of research, I think she's an Australorp? She does have a green sheen to her feathers, not too noticeable in the pictures.
Is there any way to tell how old she is, and if she is a she? She's probably about 3-4 lbs, at a guess, and she's put on a bit of weight since we found her.

 

[KikiLeigh02]

It's hard to say age for sure, but I would guess anywhere from 12-16 weeks or so. Looks like she has pinky/white skin between her toes so I'd say you're right about it being an Australorp. If I'm anywhere close on age it does look like a pullet.

 

[Chick-N-Fun]

You’ve found yourself one pretty pullet!!!!!

 

[T'sbird]

Oh thank you!!! I had no idea they got so mature looking so fast! I'm a dog person, so the chicken thing is new to us.

 

[Frazzemrat1]

The green sheen does not mean anything. All birds of all species that are black will sheen greenish or purplish.
If her feet are whitish pink on the bottom then she's an Austrolorp. If she's yellowish on the foot bottom, then black jersey giant.

 

[Crazy for Chickens!]

Austrolorp Pullet, probably 16-20 weeks....i think. She looks like she will redden up soon and start laying.