please identify this bird for me :)

It's name is in its action...wagtail (pied wagtail)

sorry,
I should have mentioned that it comes in on the right side of screen on about 20 seconds, only stayes for a few seconds..
many thanks

Thanks Linda,
I thought it might be but wanted the confirmation from you experts,

thanks again
Antony

Always nice to see something new in the garden ;-)