Puffing tail up and spinning it like it's an aeroplane propellor

[Phoenix]

I know what puffed up tail means, but I've noticed something. Sometimes if Ebony comes to find me in a hurry because she's seen something scary (I can tell by her ears being back, her tail being puffed up and the fur along her back being raised) she spins her tail like a propellor? Do you think she's frantically trying to signal something to whatever's scaring her?

For example this morning she came to find me and something had scared her (when she was inside - it was early hours of the morning) and she was spinning her tail like I've already described (puffed up), not sure what she decided was scary but she soon calmed down after I sat with her and gave her some breakfast.

Tigger never finds anything scary - in fact she tries nicking Ebony's breakfast so normally Ebony then tries to help herself to Tigger's breakfast (which is why I supervise mealtimes because Ebony's on a special diet)

[angieh]

I'd love to see this propellor tail Phoenix - I've certainly seen puffed up "Christmas tree" tail waving from side to side, but never going round!!!

[Phoenix]

Tried getting a picture of it but Ebony's not playing ball(I got a couple of pictures of her but not doing the propellor tail)