hard to concentrate: Delphinidae - Dofins
hard to concentrate: En Tama, el gat de la MartaB
hard to concentrate: Larus ridibundus - Gavina vulgar
hard to concentrate: Pelecanus - Pelicà
hard to concentrate: Phoenicopterus chilensis - Flamenc de Xile
hard to concentrate: Ciconia ciconia - Cigonya blanca
hard to concentrate: Tinc un amic