Eurasian Blackcap

Voice

The song opens with a hurried, chattering and slightly scratchy warble and then bursts into a loud, clear, fluting final passage with a bugle-like quality. Sung from late March to July. The call is a hard repeated tak, like two pebbles struck together, also heard in gardens in winter, plus a churring alarm near the nest.

Identification

A plain grey-brown warbler with no wing bar and no eye-ring, marked by a crisply bordered cap. Males have a glossy black cap reaching just above the eye, with grey head sides and underparts; females have a rufous-brown cap and warmer, browner flanks. Juveniles resemble females, but young males often show a mixed black-and-brown cap in late summer.

Confusion species

Females are most often confused with the smaller Lesser Whitethroat and with Garden Warbler, which has no cap at all and a rounder, blander face. In the south, Sardinian Warbler is the pitfall: its black hood extends below the eye, it has a bright red eye-ring and clean white throat, and a rattling voice. Cap stopping above the eye with no eye-ring means Blackcap.

Habitat

Broadleaved and mixed woodland with a well-developed shrub layer, woodland edges, hedge banks, rank parks, churchyards and gardens with elder and bramble. In the Mediterranean also laurel woods, riverine forest and dense maquis; in winter wherever berries and ivy fruit are available.

Range and movements

Almost all of Europe. In the Netherlands a numerous summer visitor from April to October, with a slowly growing wintering group at garden feeders. In Iberia it breeds mainly in the northern half and in mountain forest, while in winter the whole peninsula fills with central European birds fattening on olives, berries and figs.

• Resident
• Breeding (summer)
• Winter
• Passage
• Migration direction
• dark = core range, pale = thinly spread

Where and when to look

Mid-April to late May, early morning in leafy woodland with shrub layer: learn the sharp tak first and every Blackcap becomes locatable. In winter it pays to work Spanish olive groves and Dutch gardens with ivy and fat balls, where birds sit low and quiet.

Conservation status

One of the clear winners of recent decades, increasing across most of Europe, helped by denser woodland structure and by winter feeding. Clearance of scrub and heavy flailing of woodland edges still cost nest sites, and songbird trapping continues on Mediterranean migration routes.