Do Flamingo Land ever have zoo only days (like Chessington) or is the zoo only accessible via the theme park entrance fee?
I went to one on the 19th February. There are doing a Zoo weekend only every weekend- http://www.flamingoland.co.uk/park/wild-weekends.html
That's interesting they have been extended as last weekend had been advertised as the final one hadn't it? It just goes to show the zoo is popular in itself. My day there on the 17th was my most enjoyable visit for several years.
I just phoned Flamingoland to confirm that they are open. Their zoo only days will be on every weekend up until the theme park opens on the 24th March. Entry is £5 per person, opening times are 10-4pm.