[Birds and pollution from petroleum and its derivatives]

animal diseases animal health cleaning enfermedades de los animales inquinamento marino lesiones lesioni lesions limpieza maladie des animaux malattie degli animali nettoyage oiseau aquatique petroleum petrolio pollution des mers pulitura salute degli animali sanidad animal sea pollution servicios veterinarios servizi veterinari sintomi symptome symptoms uccelli acquatici veterinary services waterfowl