Would just like to say that the birds in question were neither advertised nor purchased through Pigeon Chat.
We are trying to help to get to the bottom of this though.
The "Heartbreaker" hen (1st 4,710 birds etc..) featured on www.gordonbrothersandsons.co.uk website is Gaby x Zoontjen bloodlines. Mother of "Heartbreaker" is direct daughter of "Ankie"
The 5000 hen was one of Flor Vervoort's greatest pigeons. Was sold a few years ago for a MASSIVE sum (Think nearly £60,000 if memory serves)
Winner 23 x 1st & ace breeder.
If I were to ever start again (which I won't) I would'nt confine myself to my locality - I'd use the internet to search the world for what I thought were the right birds
Canker lives & breeds in the crop - hence most the time you can't see it
The yellow cheesey form is excessive and deep rooted
A standard canker treatment OUGHT to shift it - if it doesn't I'd said there was something fundamentally wrong with pigeon - assuming you're using the product correctly