And a bit of SSR trivia - the wartime codename for IFF was "Parrot". Which is why when interrogated, it "Squawks".
Often wondered why, now I know.
Makes perfect sense.
Thanks.
Which reminds me of a phrase which I haven't heard for a very long time and that is,
"Strangle your parrot"
To turn your IFF to OFF.
Regards,
BH.