In article , shannie
writes

Only the yellow flowers are affected

I wonder if it has anything to do with the fact that they may feel
threatened by them thinking they are finches?? Especially now during the
nestbuilding and breeding season?

They have done red, yellow, pink and mauve here - so it's not just
yellow that sends them into snipping mode (((((

--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason, put ransoms
at jandg dot demon dot co dot uk where you see