They say that as it gets colder, the long-tailed tit takes more air in their feathers, swelling out as a result!
This is not unique to the long-tailed tits, most birds can fluff up their feathers to increase their insulation against the cold.If they do swell out more the colder it gets, I'll try and see how much they can end up swelling out.I... wonder if this is ok...
The 20th of January is
Long-tailed Tit Day!
In particular, the Aegithalos caudatus japonicus subspecies, who lives in Hokkaido and has a distinctive all-white head.
Apparently, the commemorative day is set to this date because it's the day of the 大寒, the solar term that's supposed to be around the coldest time of the year.That's... Woaaaah!free——eeze