Falconer Ranger - Distract Trick

[Kazejin]

Question from my home table. Maybe we have an older print of Ultimate Combat, but I don't see anything in the FAQ about it, so I'll go ahead and ask.

Ultimate Combat, page 67 wrote:

Distract (DC 20; bird only): The animal companion flutters wildly around any enemy it would normally attack with the attack trick. It makes an attack roll against that enemy. On a hit, the enemy is shaken.

What is the duration on the shaken effect here?

[TheInnsmouthLooker]

The PRD has the same wording, so I don't think that it's been clarified. I have a PFS falconer, so I'm curious as well.

[Archaeik]

JJ's answer