Interesting I imagine this will be a large coop that will house several of the smaller bird species. Also It looks very much like the new aviaries on Rainbow Lawn.
@Charlie Simmomds Yes, it looks like the bird team are going for this wood design on the outside of the house. This will probably be for the Ibis, Vultures and Spoonbill. I'm not sure all the birds will be put in to the new aviary e.g the ducks
That'd be a shame I rather liked the large amount of birds in that aviary together, yes having fewer makes sense with the smaller space and can put more highlight on the ibis especially but I always found the birds in europe on the edge to be a great mix.