Long-tailed Tit (Japanese subspecies)
Classification: Class: Aves, Order: Passeriformes, Family: Aegithalidae, Genus: Aegithalos, Species: Aegithalos caudatus

Brief Description
A very small, fluffy, and distinctive passerine bird known for its extremely long tail and round body. The Japanese subspecies is especially striking due to its pure white head.
Additional Information
- Region of Origin: Eurasia, with specific subspecies (like Aegithalos caudatus japonicus seen here) found in Japan.
- Typical Sighting Period: Year-round, but often more noticeable in winter when they flock together and forage for food.
- Plumage Details: The Japanese subspecies (Aegithalos caudatus japonicus) is particularly distinctive with a nearly entirely white face and head, lacking the prominent black stripe above the eye found in European subspecies. It has a fluffy white belly, dark wings with some black and white patterning, and a dusky pinkish-brown wash on its flanks and shoulders. Its tail is disproportionately long, often longer than its body.
- Ecological Significance: Long-tailed tits are insectivores, playing a role in controlling insect populations. They are also known for their elaborate, domed nests made of moss, lichen, and spider silk, contributing to the biodiversity of their habitats.
- Conservation Status: Least Concern (Globally, due to a very large range and population trend appearing stable).
- Observation Tips: Look for them in mixed and broadleaf woodlands, parks, and gardens, especially in winter. They are highly social and often move in small, noisy flocks, making a distinctive 'tsee-tsee-tsee' call. They can be quite acrobatic while feeding on insects and small invertebrates in trees and bushes.