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Lapwings Nest Later Further North in Britain, but Oystercatchers Start Earlier

Juvenile northern lapwing in Standlake, Oxfordshire, England
Research: Reproduction & development · Conservation: Management

Even farmland managed to protect breeding birds can reopen to grazing and mowing too soon. An analysis of fifty years of British nest records shows why: northern lapwings (Vanellus vanellus) and Eurasian oystercatchers (Haematopus ostralegus) nest at different times, and those differences change from south to north.

Researchers examined 6,277 lapwing and 2,387 oystercatcher nesting records spanning roughly 1,200 kilometres of the United Kingdom. They then compared the birds’ nesting phenology—the seasonal timing of the different nesting stages—with dates in a Scottish scheme that pays farmers for environmental management.

Lapwings start later in the north, oystercatchers earlier

Lapwings began nesting before oystercatchers, with up to six weeks separating the species’ nesting starts. Further north, lapwings started later and had a shorter nesting season. Oystercatchers showed the opposite pattern, beginning earlier at more northerly sites.

Timing could shift by up to about three days per 100 kilometres. A single date for allowing livestock back onto fields or starting mowing can therefore fit poorly across both species and regions.

Many nests are still active when livestock return

For the Scottish scheme, researchers calculated that up to 80% of lapwing pairs and 84% of oystercatcher pairs could still have active nests when livestock were allowed back in an average year. Eggs and chicks on the ground then face trampling and disturbance.

Mowing dates were also poorly aligned. Up to 35% of lapwing chicks and 72% of oystercatcher chicks could still be under twenty days old when mowing was permitted in silage fields. Young chicks are particularly vulnerable: they often defend themselves by freezing and relying on camouflage, which offers no protection against farm machinery.

Protecting eggs is not enough if too few chicks survive after hatching. At around 20% chick survival, the researchers calculated that almost every lapwing pair would need to hatch a brood to maintain a stable population. Even complete hatching success would not be enough for oystercatchers. Raising chick survival to around 30% could allow stable populations even when a smaller share of pairs hatched successfully.

Dates that follow the birds

The researchers propose tailoring periods without grazing or mowing to species, region and farming activity. Their calculations suggested that extending current restrictions by about two weeks, alongside these adjustments, could reduce the proportion of nests still active when livestock return to around 50% for lapwings and 27% for oystercatchers. The proposed mowing dates could also protect chicks from mowing through their first twenty days.

The proposal is based on nest records and calculations; the effects of these particular dates have not been tested in the field. The researchers also stress that delaying mowing and grazing can cost farmers money, including through lower forage quality. Well-targeted measures therefore need compensation that reflects those costs.

Sources and image credit

  1. Gray, L., Douglas, D. J. T., Lambin, X., Parish, D. M. B., Perkins, A. J., White, P. J. C., Wilson, M. W., Batey, C., Brown, D., Mason, L. R., Smart, J., Hoodless, A. N., Wright, M. A., & Bodey, T. W. (2026). Timing matters for farmland breeding waders: Aligning agri-environment exclusion periods with species- and latitude-specific nesting phenology. Journal of Applied Ecology, 63, e70556.Primary open-access research article first published 13 September 2026. Full text checked. The study analysed 50 years of UK nesting data for northern lapwing (n=6,277) and Eurasian oystercatcher (n=2,387). Nesting phenology differed by species and latitude, with opposite latitudinal shifts. A Scotland case study showed substantial mismatch between fixed agri-environment dates and active nests/chicks.

Image: Juvenile northern lapwing (Vanellus vanellus) at Standlake Pit 60, Oxfordshire, England, photographed 30 July 2015. Photo: Charles J. Sharp. Source: Wikimedia Commons. CC BY-SA 4.0. Quality Image. Representative UK image; not an identified bird from the 2026 study. · CC BY-SA 4.0 · Source

About this content: This story was produced with AI assistance within an editorial workflow developed by Wildlife Vagabond. Editorial responsibility remains with Wildlife Vagabond.How AI is used

Reproduction & development

SPECIES IN THIS STORY

Species in this story

Northern Lapwing Vanellus vanellus Explore species Eurasian Oystercatcher Haematopus ostralegus Explore species

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