Sparrows stealing worms from Starlings?

I have seen Sparrows integrating  with Starlings for years as we all have so nothing new there.

However I have never noticed till this week while watching them in the garden that the Sparrows are actually stealing the worms that the Starlings are foraging. Not mob attacks by the Sparrows, single birds of both sexes mingling in with the Starlings then rushing in to snatch the spoils of the Starlings work. The Starlings do not even bat an eye lid or take any umbrage to such antics.

Is this normal and have I just never noticed this?

Thanks in lieu for any replies.

Riff Raff