Wildlife

Shelduck Estuarine Ecology and Moult Migration Welfare

Shelduck are distinctive estuarine wildfowl that undertake a remarkable moult migration, congregating in enormous flocks in the Wadden Sea.

Key Facts

Shelduck moult in flightless gatherings of tens of thousands in the Wadden Sea each summer
During moult they are highly vulnerable to disturbance and predation
UK estuaries provide essential wintering and breeding habitat
Shelduck nest in burrows and rabbit holes, depending on well-structured dune systems

Welfare Considerations

Industrial disturbance, pollution, and port development in Wadden Sea moult sites can cause catastrophic welfare impacts during the flightless moult period. Estuarine habitat loss reduces breeding and wintering options.

What You Can Do

Support estuarine habitat designation and protection at key shelduck sites
Advocate for sustainable use of Wadden Sea and North Sea habitats
Engage with wetland bird monitoring schemes that track shelduck populations