I found this update on the RSPCA facebook page:
"Mallydams Woods News:
Wildlife rehabilitation team manager Richard Thompson said: “The booby bird is doing well considering just how weak and dehydrated he was when he came in. He is improving slowly but surely.
“We have been keeping a close eye on him and keeping him warm with heat lamps. As you can see in the video, he has just started eating sprats - a type of small fish - which he is being hand fed for the moment and has started to put on a little bit of weight - which is fantastic news!"
See my recent blog about his 'adventure' and go to the RSPCA facebook page for a video of how the lost Red-Footed Booby looks now, nice one Mallydams!