My personal experience is limited to two W/C adult females, Connie, so I'll only comment on them.

Saoirse once she started eating did eat very, very well. She also seemed to gain weight very efficiently (more weight gain off the same prey as other females her size...this just may be her thing or a wild thing or a going hungry so long thing...who really knows). Saoirse has fasted however both winters. We have just started her this fall on ASF's hoping to keep this years fast at bay. I'll let you know how that goes. Usually she's fasting by now but our fall weather was very delayed this year so I'm not sure how it will go.

Danu we only just got earlier this summer. We have her eating now but she's such a shy hunter it's hard to tell how she will go. If anything is even the littlest bit "off", she refuses to eat. She also won't eat unless left completely alone with a prey so we are just going very slow with her for now. It's very early days with her yet.

I'm glad to hear your WC adult is feeding already and feeding so aggressively.