Eurasian Blue Tit
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Cavity Nester ⌀ 1.1" Small

Eurasian Blue Tit

Cyanistes caeruleus

Tiny European songbird with a sky-blue cap, bright yellow underparts, and a bouncy disposition at garden feeders. Famous in the UK for the mid-century habit of pecking through milk-bottle foil caps.

IUCN Red List
Least Concern

Widespread and abundant; no known immediate threats to the population.

Floor
4" × 4"
Interior height
8"
Entrance hole
⌀ 1.1"
Mount height
5–15 ft
Breeds
Apr–Jun
Broods / yr
1
Cool Facts

Things you didn't know about the Eurasian Blue Tit

01

Blue Tits famously learned to peel back the foil tops of milk bottles left on doorsteps in Britain. A behavior that spread across the country in the early 1900s.

02

Pairs raise a single huge brood of 8–14 eggs, timed to coincide with the peak abundance of oak caterpillars.

03

Their azure crown reflects ultraviolet light invisible to humans; UV-bright males are preferred by females.

Attract Them

How to bring the Eurasian Blue Tit to your yard

Blue Tits are confiding garden birds across Europe, easy to attract with a small nest box and standard garden feeders.

Food

Sunflower hearts, peanuts, suet, and mealworms. Tube feeders, peanut cages, and tray feeders all work.

Box placement

Mount a 25–28mm hole box 1.5–4 m up on a tree trunk or wall, away from direct sunlight, with a clear flight path in.

Cover & landscaping

Native deciduous trees, oak especially, and dense shrubs nearby for cover.

Water

Shallow bird bath. They bathe regularly even in winter.

Competitors

House Sparrows can crowd them out near buildings. A 25mm hole excludes sparrows.

Avoid

Don't use chemicals on your garden, caterpillars are essential nestling food.

Range & Habitat

Where you'll find them

A widespread Eurasian woodland bird, a backyard staple from Ireland to Russia.

By region
  • British Isles & Western Europe

    Common year-round in gardens, woodlands, and parks throughout.

  • Continental Europe

    Resident across the continent except the far north of Scandinavia.

  • Mediterranean

    Resident around the Mediterranean coast, with a separate subspecies in North Africa.

Habitat preferences

Mixed deciduous woodland, hedgerows, mature gardens, parks. They especially favor oaks for the caterpillars they feed nestlings.

deciduous woodlands gardens parks
10-year local observation heatmap. Click a season above to isolate one band.
Fledgemade Kit

The right house for the Eurasian Blue Tit

Size S

Small body + 1⅛" panel

Body sized to 4"×4" floor. The 1⅛" panel locks out larger nest competitors while letting the Eurasian Blue Tit pass cleanly.

Multi-color presets
Color
Entrance hole size
$39
Customize colors - +$5
Seasonal Care

When to install. When to clean.

Install by
Autumn (Sep–Nov) for following spring
Cleaning
September–October
Winter use
Yes, overnight roosts
Continental Europe (Northern)
Communal winter roosting, up to 30+ Blue Tits in a single large box during freezing nights.

One of Europe's most box-friendly birds. 25–28 mm hole excludes Great Tit competition.