maybe, maybe not, it's not so easy. bill shape is not visible properly but in 2nd shot it appears stubby - pro micha, so does the squarish shaped head and lack of p10 mirror. now there exist enough 2nd winter caspians without a p10 mirror and underwings are extremely white, neck streaking looks caspian like as well although it is not as compact to form a distinct collar. all in all i get the feeling of a very pale 2cy female(?) michahellis, all dark underside to p9 and 10 supports this.