# Blue Tit (*Cyanistes caeruleus*)

> The blue tit (Cyanistes caeruleus) is an acrobatic European garden bird with a blue cap, yellow belly, and white cheeks. It weighs about 11 g, nests in tree holes and boxes, and feeds chicks on caterpillars. Listed Least Concern and a staple of UK gardens, though timing mismatches with climate-shifted caterpillar peaks worry ecologists.

- **Category:** Bird
- **Conservation status (IUCN):** Least Concern
- **Range:** Woodland and gardens across Europe, the Middle East, and parts of North Africa.
- **Canonical page:** https://globalanimalguide.org/animals/blue-tit/
- **Last reviewed:** 2026-07-16

## Scientific classification

- **Kingdom:** Animalia
- **Phylum:** Chordata
- **Class:** Aves
- **Order:** Passeriformes
- **Family:** Paridae
- **Genus:** Cyanistes

## Facts at a glance

| Attribute | Value |
| --- | --- |
| Scientific name | Cyanistes caeruleus |
| Diet | Insectivore |
| Habitat | Deciduous woodland, parks, and gardens |
| Lifespan | Around 3 years in the wild (varies by population and captivity). |
| Weight | About 0.011 kg typical adult mass (sex and region vary). |
| Top speed | Up to roughly 30 km/h when moving at speed. |
| Conservation status | Least Concern (IUCN) |

## Acrobatic cavity nester

Blue caps and yellow underparts make identification easy. They hang upside-down to glean aphids and visit feeders boldly. Clutches can exceed a dozen eggs in good years.

## Caterpillars for chicks

Adults take insects and seeds; peak chick demand coincides with oak winter-moth caterpillars. Mild winters and early springs can desynchronise hatch and food peak.

## Europe to North Africa gardens

Deciduous woodland, parks, and gardens across Europe, the Middle East, and parts of North Africa. Across its range it is tied to deciduous woodland, parks, and gardens, and field accounts emphasise this species’ distinctive ecology rather than generic habitat labels.

## Climate timing challenge

Least Concern and still numerous, yet research shows breeding success falls when caterpillars peak before chicks hatch — a live example of climate-driven mismatch.

## Frequently asked questions

### How many eggs can a blue tit lay?

Large clutches of 8–12 or more are common when food is abundant.

### Why do blue tits need caterpillars?

Nestlings grow fastest on protein-rich caterpillars, especially in oak woods.

### Will blue tits use nest boxes?

Yes — they readily adopt small-hole boxes in gardens and woods.

### Are blue tits the same as chickadees?

They are related titmice; chickadees are the North American Poecile group.

### Where do blue tits live?

Woodland and gardens across Europe into the Middle East and North Africa.

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Source: Global Animal Guide (https://globalanimalguide.org/animals/blue-tit/). Licensed CC BY-NC 4.0 — free for non-commercial reuse with attribution.