Tahlequah, an orca well-known for having carried her dead calf for over two weeks back in 2018, has been struck by a heartbreaking event once again. After it was recently announced that the orca had given birth,

The calf was born Dec. 24. Observing researchers noted unusual unspecified behaviors by mother and calf that led them to worry for the young whale's health.

Tahlequah previously carried another dead newborn for 17 days in 2018. Here's what she's taught us about how orcas deal with death.