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The Dee Estuary is one of the most important areas in the United Kingdom for Wildfowl and Waders, a typical winters day holding 30,000 duck and 100,000 waders. Because of this exceptional wildlife interest the Dee Estuary is a Site of Special Scientific Interest, a Ramsar Site, a Special Protection Area and a Special Area of Conservation.

The following table of bird counts for some of the most important species on the estuary are based on, but not necessarily validated by,  the Wetland Bird Survey (WeBS). No data should be used without permission of the WeBS Office at BTO.  Note that the max counts shown are the max over a twelve month period, July to June, which is the WeBS year. Therefore counts include the period when birds are on passage as well as wintering birds. Counts shown took place at high tide as part of the monthly nationwide Wetland Bird Survey. In some cases, particularly for Bar-tailed Godwits, counts were significantly higher at low tide.

More comprehensive counts are given in the National WeBS Reports and the Dee Estuary WeBS Reports - see the site index which gives details on how to obtain these publications.

For latest news of bird sightings and counts see the newsletter page and latest sightings.

Max WeBS Counts
Species 2003/04 2004/05 2005/06 Month (05/06)
Shelduck 12630 13334 8872 October
Wigeon 5658 2464 6695 November
Teal 5549 2752 2854 December
Pintail 6317 4312 6330 November
Oystercatcher 23914 25944 22847 November
Grey Plover 1851 1214 1091 February
Knot 38070 10243 24505 November
Dunlin 41679 16878 19867 February
Black-tailed
Godwit
4493 6452 5379 October
Bar-tailed
Godwit
1209 132 328 April
Curlew 5727 6933 4826 September
Redshank 11014 10208 12427 September

References:
1. Neil Friswell and Colin Wells. Dee Estuary WeBS Annual Report, 2003/04.
2. Neil Friswell and Colin Wells. Dee Estuary WeBS Annual Report, 2004/05.
3. Neil Friswell and Colin Wells. Dee Estuary WeBS Annual Report, 2005/06.
4. Banks, A.N. et al., Waterbirds in the UK 2003/04, BTO/WWT/RSPB/JNCC.
4. Banks, A.N. et al., Waterbirds in the UK 2004/05, BTO/WWT/RSPB/JNCC.