Frostwing is Laken's pet bird. It isn't clear which exact kind of predator bird it is, but Laken decided on it being an eagle (or eaglet).
When Frostwing was still a chick, her plumage was definitely green.
Frostwing killed its siblings (like the oldest eaglets do with their younger siblings); but Frostwing's parent died fighting another predator. How Frostwing survived and why nothing had eaten her mother's corpse, is unknown.
Laken was drawn towards Frostwing to rescue it, and he and Durene then took the bird in. Its carnivorous diet was a problem since they didn't have too much meat, but Laken fed it squirrels he hunted. Frostwing however gained Laken his first Beast Tamer levels.