15 September β 9 February
the coastal calendar, unshifted
Any tree, any nest box, any hole in a wall; the two-note song starts in February.
Times laying so that the chicks hatch on the peak of the caterpillar flush, which means it is one of the best-documented species for climate-driven advance β the first egg now falls about a fortnight earlier than in the 1970s across Europe.
photos, sightings and recordings, off this site
where this species is on the list
| Phase | When | Length | What it means |
|---|---|---|---|
| courting | 10 February β 19 March | 38 days | Song, display, fighting, scent-marking β pairs forming or reaffirming. |
| building | 20 March β 9 April | 21 days | Nest, burrow or den under construction, or being lined out. |
| on eggs | 10 April β 29 April | 20 days | Clutch laid and being incubated, or buried and left to the sun. |
| raising young | 30 April β 19 May | 20 days | Dependent young in the nest, den or burrow, being fed. |
| young have left | 20 May β 30 June | 42 days | Young out of the nest or den, but still fed and followed by the adults. |
| moulting | 1 July β 14 September | 76 days | Feathers or coat replaced. Many birds go quiet and hide while it happens. |
| going about the year | 15 September β 9 February | 148 days | Feeding, holding territory, doing nothing the calendar singles out. |