In the harsh cold of winter, one might think that nature around us quietens down a bit. However, in reality, small birds are actively bustling about. This time, let’s talk about the phenomenon commonly seen in winter forests known as “mixed flocks of tits.”
A “mixed flock of tits” refers to a group made up primarily of birds from the tit family, such as the Great Tit and the Varied Tit, along with different species of birds like the Japanese Pygmy Woodpecker and the Japanese White-eye. This creates a marvelous ensemble performance within the winter woods.
So, why do these birds form mixed flocks? The primary reason is “safety.” Having many eyes in the group means that predators can be spotted quickly, allowing for a swift escape. Additionally, by reducing the burden of vigilance, the birds have more time to search for food, allowing them to eat more efficiently.
Birds from the tit family maintain a high body temperature of around 39°C, and to keep this constant temperature during the cold winter, they need to search for food efficiently. This is one of the significant reasons they form mixed flocks.
When you encounter a mixed flock, the first thing you’ll notice is the chorus of many birds’ calls. Birds of various colors fly back and forth. However, since mixed flocks move at the pace of a walking person, if you stop to watch, they will pass by very quickly. Also, they don’t always appear in the same place at the same time, so consider yourself lucky if you do come across them.
Even on a cold winter’s day, you can enjoy the lively performance of small birds in nature close to you. On your next walk, be sure to listen carefully, and you might just discover something new.
