British Trust for Ornithology www.bto.org
Devon & Cornwall Wader Ringing Group www.dcwrg.org.uk
English Nature www.english-nature.org.uk
Environment Agency www.environment-agency.gov.uk
Euring (colour-ring reporting) app.bto.org/euring/lang/pages/rings.jsp
International Wader Study Group www.waderstudygroup.org
Lincolnshire Wildlife Trust www.lincstrust.org.uk
Royal Society for the Protection of Birds www.rspb.org.uk
Spurn Bird Observatory www.spurnbirdobservatory.co.uk
Swale Wader Group www.swalewaders.co.uk
Wadertales wadertales.wordpress.com
Wash Wader Ringing Group www.wwrg.org.uk
Yorkshire Wildlife Trust www.yorkshire-wildlife-trust.org.uk