Introduction

This report presents site trends based on the data gathered by the Irish Wetland Bird Survey (I-WeBS). Only species with sufficient data at Lady’s Island Lake (site code 0O402) 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.

Site Summary

Trend (%)
Species Lady’s Island Lake - 5 Year Lady’s Island Lake - 12 Year Lady’s Island Lake - 23 Year Long Term Trend
Red-breasted Merganser 60.0 380.0 -97.8 Large Decline
Scaup 163.6 -51.3 -97.5 Large Decline
Dunlin -98.7 -64.9 -94.7 Large Decline
Pochard -6.2 -86.2 -92.2 Large Decline
Bar-tailed Godwit 357.1 -88.0 -92.1 Large Decline
Goldeneye NA -55.9 -88.4 Large Decline
Pintail 218.2 -44.4 -85.1 Large Decline
Grey Plover -51.5 -96.4 -83.3 Large Decline
Teal -2.4 -70.1 -82.6 Large Decline
Golden Plover -83.6 -62.3 -80.2 Large Decline
Curlew 60.5 -26.5 -72.5 Large Decline
Great Crested Grebe -60.6 97.1 -71.8 Large Decline
Oystercatcher -9.1 -77.7 -69.5 Large Decline
Lapwing -43.7 -57.6 -69.4 Large Decline
Tufted Duck -30.8 225.8 -32.7 Moderate Decline
Little Grebe -18.8 -8.8 -29.7 Moderate Decline
Turnstone 22.2 -92.0 -24.7 Intermediate Decline
Wigeon -46.1 4.2 -16.3 Intermediate Decline
Cormorant 5.3 -14.7 -10.8 Intermediate Decline
Mallard -60.7 -46.8 17.4 Stable or Increasing
Gadwall -54.9 -17.1 17.6 Stable or Increasing
Grey Heron -25.0 -1.3 25.0 Stable or Increasing
Redshank 4.8 -56.3 34.7 Stable or Increasing
Shelduck -49.7 -69.9 42.6 Stable or Increasing
Light-bellied Brent Goose -52.1 -88.6 59.1 Stable or Increasing
Black-tailed Godwit -74.0 213.0 75.6 Stable or Increasing
Shoveler 105.1 36.4 97.9 Stable or Increasing
Coot 70.5 105.5 163.2 Stable or Increasing
Mute Swan 161.2 456.5 312.9 Stable or Increasing
Little Egret 0.9 162.8 769.2 Stable or Increasing

Species Analysis

Light-bellied Brent Goose

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -52.1 -88.6 59.1
National -11.2 1.2 93.3

Mute Swan

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 161.2 456.5 312.9
National 4.6 9.6 13.8

Shelduck

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -49.7 -69.9 42.6
National 6.3 -0.8 9.3

Shoveler

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 105.1 36.4 97.9
National 23.0 -21.3 -10.8

Gadwall

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -54.9 -17.1 17.6
National -26.5 4.3 24.4

Wigeon

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -46.1 4.2 -16.3
National 0.9 -17.0 -18.2

Mallard

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -60.7 -46.8 17.4
National -11.3 -19.7 -19.1

Pintail

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 218.2 -44.4 -85.1
National -0.8 -6.0 -13.7

Teal

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -2.4 -70.1 -82.6
National 1.8 5.7 19.4

Pochard

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -6.2 -86.2 -92.2
National -19.8 -60.4 -79.1

Tufted Duck

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -30.8 225.8 -32.7
National -20.7 -28.9 -17.9

Scaup

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 163.6 -51.3 -97.5
National -33.6 -82.9 -89.2

Goldeneye

Trend (%)
Site 5 Year 12 Year 23 Year
National -32.5 -39.0 -66.9
Lady’s Island Lake NA -55.9 -88.4

Red-breasted Merganser

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 60.0 380.0 -97.8
National -12.9 5.2 -14.7

Coot

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 70.5 105.5 163.2
National -10.1 1.1 -23.2

Little Grebe

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -18.8 -8.8 -29.7
National 6.1 16.7 38.2

Great Crested Grebe

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -60.6 97.1 -71.8
National -39.5 -6.1 -10.8

Oystercatcher

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -9.1 -77.7 -69.5
National -17.5 -31.1 10.8

Lapwing

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -43.7 -57.6 -69.4
National -6.5 -45.1 -63.9

Golden Plover

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -83.6 -62.3 -80.2
National -16.9 -58.1 -54.1

Grey Plover

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -51.5 -96.4 -83.3
National -30.6 -39.4 -57.8

Curlew

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 60.5 -26.5 -72.5
National -9.4 -23.7 -43.1

Bar-tailed Godwit

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 357.1 -88.0 -92.1
National -32.6 -13.9 -5.1

Black-tailed Godwit

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -74.0 213.0 75.6
National 22.5 25.0 92.3

Turnstone

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 22.2 -92.0 -24.7
National -33.6 -46.0 -23.7

Dunlin

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -98.7 -64.9 -94.7
National 5.9 -21.2 -45.2

Redshank

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 4.8 -56.3 34.7
National -14.0 -28.4 6.7

Cormorant

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 5.3 -14.7 -10.8
National 38.5 8.4 42.9

Grey Heron

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake -25.0 -1.3 25.0
National 1.0 -4.9 6.6

Little Egret

Trend (%)
Site 5 Year 12 Year 23 Year
Lady’s Island Lake 0.9 162.8 769.2
National 34.6 61.5 483.3

Citations

Please cite this work as follows:

Kennedy, J., Burke, B., Fitzgerald, N., Kelly, S.B.A., Walsh, A.J. & Lewis, L.J. 2022. 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/2022/04/iwebs_trends_report.html)