I-WeBS National Trends Report
I-WeBS Trends Report 1994/95 – 2019/20
First Published 2022-04-03, Updated 2023-08-17
Introduction
This report presents national trends based on the data gathered by the Irish Wetland Bird Survey (I-WeBS). Only species with sufficient data are presented.
This report is part of the I-WeBS National and Site Trends Report 1994/95 – 2019/20.
For guidance on how to interpret these trends, please see the I-WeBS Trends Report Guidance.
For details on the methods used to generate these trends, please see the I-WeBS Trends Report Methodology.
National Summary
| Species | National - 5 Year | National - 12 Year | National - 23 Year | Long Term Trend |
|---|---|---|---|---|
| Scaup | -33.6 | -82.9 | -89.2 | Large Decline |
| Pochard | -19.8 | -60.4 | -79.1 | |
| Goldeneye | -32.5 | -39.0 | -66.9 | |
| Lapwing | -6.5 | -45.1 | -63.9 | |
| Grey Plover | -21.9 | -42.8 | -58.8 | |
| Golden Plover | -17.5 | -58.0 | -54.1 | |
| Dunlin | 5.9 | -21.2 | -45.2 | Moderate Decline |
| Curlew | -9.4 | -23.7 | -43.1 | |
| Turnstone | -33.6 | -46.0 | -23.7 | Intermediate Decline |
| Coot | -10.1 | 1.1 | -23.2 | |
| Mallard | -11.3 | -19.7 | -19.1 | |
| Wigeon | 0.9 | -17.0 | -18.2 | |
| Tufted Duck | -20.7 | -28.9 | -17.9 | |
| Red-breasted Merganser | -12.9 | 5.2 | -14.7 | |
| Pintail | -0.8 | -6.0 | -13.7 | |
| Great Crested Grebe | -39.5 | -6.1 | -10.8 | |
| Shoveler | 23.0 | -21.3 | -10.8 | |
| Knot | 0.0 | -12.2 | -9.8 | |
| Bar-tailed Godwit | -32.6 | -13.9 | -5.1 | |
| Ringed Plover | -4.3 | -26.8 | -1.1 | |
| Grey Heron | 1.0 | -4.9 | 6.6 | Stable or Increasing |
| Redshank | -14.0 | -28.4 | 6.7 | |
| Shelduck | 6.3 | -0.8 | 9.3 | |
| Oystercatcher | -17.5 | -31.1 | 10.8 | |
| Mute Swan | 4.6 | 9.6 | 13.8 | |
| Teal | 1.8 | 5.7 | 19.4 | |
| Purple Sandpiper | -36.4 | -37.6 | 23.5 | |
| Gadwall | -26.5 | 4.3 | 24.4 | |
| Little Grebe | 6.1 | 16.7 | 38.2 | |
| Greenshank | 0.9 | 7.3 | 41.0 | |
| Cormorant | 38.5 | 8.4 | 42.9 | |
| Sanderling | -23.8 | -11.1 | 84.6 | |
| Black-tailed Godwit | 22.5 | 25.0 | 92.3 | |
| Light-bellied Brent Goose | -11.2 | 1.2 | 93.3 | |
| Little Egret | 34.6 | 61.5 | 483.3 |
Species Analysis
Mute Swan
Light-bellied Brent Goose
Shelduck
Wigeon
Gadwall
Teal
Mallard
Pintail
Shoveler
Pochard
Tufted Duck
Scaup
Goldeneye
Red-breasted Merganser
Little Grebe
Great Crested Grebe
Cormorant
Little Egret
Grey Heron
Coot
Oystercatcher
Ringed Plover
Golden Plover
Grey Plover
Lapwing
Knot
Sanderling
Purple Sandpiper
Dunlin
Black-tailed Godwit
Bar-tailed Godwit
Curlew
Redshank
Greenshank
Turnstone
Citations
Please cite this work as follows:
Kennedy, J., Burke, B., Fitzgerald, N., Kelly, S.B.A., Walsh, A.J. & Lewis, L.J. 2023. Irish Wetland Bird Survey: I-WeBS National and Site Trends Report 1994/95 – 2019/20. BirdWatch Ireland Waterbird Report to the National Parks and Wildlife Service. BirdWatch Ireland, Wicklow. (https://birdwatchireland.ie/app/uploads/2023/08/iwebs_trends_report.html)