Wakefield 1 - YB Sickness

In a discussion further down (Richmond HS / Wakefield 1) Peter Matthews mentions seeing birds spewing in the baskets. Obviously these are suffering from Young Bird Sickness.
Does Peter have the authority to bring baskets of pigeons from that club back home when he observes this?

I certainly don't want birds liberated if they are ill and I don't suppose Peter or any genuine fancier does. It's not fair on the birds and won't be any good for the overall liberation if a number of them are not in a fit state even to begin their journey home.

If members knew that all of their club's birds could be returned if sickness is seen, they might be even more observent and cautious about basketing them.

I would be very interested to read other people's views, especially Peter's as this would entail more work for him and his team.