I like birds and there will be many of them. I will try to find their songs eventually. Some I already found. If a bird looks different in summer and winter I add the bird like "birdname summer" and "birdname winter" like for the ptarmigan. So in case of the ptarmigan in summer both answers "ptarmigan" OR "ptarmigan summer" will be correct. If there are synonyms of a bird name listed by comma you can use ANY right synonym in your answer.