Cumulative Human Impacts on biRd Populations (CHIRP): A multi-tiered approach to conserving the near-threatened Eurasian Oystercatcher

The Eurasian Oystercatcher (Haematopus ostralegus) is a partially migratory meadow bird, and wading bird, that has declined substantially in recent decades. The cause of the decline may be due to several threats which vary in space and time. For example, some threats occur principally in winter like climate change, human disturbance or competition whilst others occur in summer, of which some only occur inland like agricultural intensification whilst shellfisheries or flooding are in coastal areas. Therefore, the relative impact of these threats, and how these impacts accumulate across the annual cycle will depend upon where an individual is in space and time, i.e. where it breeds and winter…