Their parents were a female crow and a male hawk laguz.

Sirra is a jeweller and metalworker Lana is a seamstress and baker.

Both these birds were born about 200 yrs (according to an age chart in the Tellius artbooks hawks live to about 207 yrs and ravens about 210 yrs) before the events of Path of Radiance. 

Sirra eventually became known for her designs and helped make the jewellery the Serenes Nobles wear, she was caught up in the massacre during a visit to a friend, dying while attempting to get herself and her friend both away safely.