20 September β 19 April
the coastal calendar, unshifted
Sand and loess banks, quarry faces and river cuttings; heard overhead before seen.
Nests in a metre-long tunnel dug by the pair, and the colony returns to the same bank year after year β which is why a single afternoon of quarry work in May can end fifty pairs at once.
photos, sightings and recordings, off this site
where this species is on the list
| Phase | When | Length | What it means |
|---|---|---|---|
| away for the winter | 20 September β 19 April | 212 days | Not here at all. The birds are on the wintering grounds, thousands of kilometres south. |
| arriving | 20 April β 4 May | 15 days | Returning from the wintering grounds; the first birds are ahead of the peak. |
| building | 5 May β 24 May | 20 days | Nest, burrow or den under construction, or being lined out. |
| on eggs | 25 May β 14 June | 21 days | Clutch laid and being incubated, or buried and left to the sun. |
| raising young | 15 June β 14 July | 30 days | Dependent young in the nest, den or burrow, being fed. |
| young have left | 15 July β 24 August | 41 days | Young out of the nest or den, but still fed and followed by the adults. |
| leaving | 25 August β 19 September | 26 days | Leaving for the wintering grounds; stragglers run weeks behind. |