What instrument or sound is this?

[lmv]

You can hear it for the first time at 2:54 and then it plays repeatedly about every 5 seconds. It's some kind of rattling. What is it called?

[Downangle]

Sounds like castanets to me.

[EffJee]

Sorry but, this video isn`t available on the website.
But on youtube everything is ok and I guess it can be castanets.

[lmv]

Thank you all for the answers. I also thought those could be castanets, but I eventually decided it must be a matraca, aka "ratchet."

[thecontrolcentre]

... those are deffo castanets.

[Ah_Dziz]

That is castanets. For really.