Gull?

Gull?

Observation - Gull?. Description: Lifted from a friend's Facebook page (with permission). At the risk of appearing stupid I'm guessing a Glaucaus Gull or am I seeing black at the wing tips?

Lifted from a friend's Facebook page (with permission). At the risk of appearing stupid I'm guessing a Glaucaus Gull or am I seeing black at the wing tips?