Have your video camera ready next time. That is a must see happening.

Our cockatiel does that to my furbabies. Waddles towards them, hissing with her wings spread. They back up in confusion, tripping over each other. You would think that the furbabies would remember and leave the bird alone, but no. Not a chance. Even the cat is scared of Duchess.
__________________
Joanne

Eli

Chipper

Eva

Snowboy

Rosie(R.I.P. 1996-July 29, 2013)

Cocoa(R.I.P 1998-April 26, 2012):