I-WeBS Ballybutler (Butlerstown) Lake Trends Report
I-WeBS Trends Report 1994/95 – 2019/20
Published 2022-04-01
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 Ballybutler (Butlerstown) Lake (site code 0L002) 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
| Species | Ballybutler (Butlerstown) Lake - 5 Year | Ballybutler (Butlerstown) Lake - 12 Year | Ballybutler (Butlerstown) Lake - 23 Year | Long Term Trend |
|---|---|---|---|---|
| Shoveler | NA | -100.0 | -100.0 | Large Decline |
| Lapwing | 200.0 | -98.5 | -99.6 | Large Decline |
| Wigeon | 0.0 | -99.5 | -99.3 | Large Decline |
| Coot | -89.8 | -93.8 | -92.5 | Large Decline |
| Mallard | -46.8 | -77.5 | -72.7 | Large Decline |
| Teal | -59.7 | -57.8 | -23.3 | Intermediate Decline |
| Grey Heron | 8.2 | -23.3 | -14.8 | Intermediate Decline |
| Gadwall | 2.8 | -71.8 | -12.4 | Intermediate Decline |
| Mute Swan | 155.6 | 58.0 | 0.0 | Stable or Increasing |
| Cormorant | 14.5 | -70.1 | 2.4 | Stable or Increasing |
| Curlew | 47.2 | -40.4 | 430.0 | Stable or Increasing |
| Little Grebe | 72.7 | 56.0 | 447.5 | Stable or Increasing |
Species Analysis
Mute Swan
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 155.6 | 58.0 | 0.0 |
| National | 4.6 | 9.6 | 13.8 |
Shoveler
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| National | 23.0 | -21.3 | -10.8 |
| Ballybutler (Butlerstown) Lake | NA | -100.0 | -100.0 |
Gadwall
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 2.8 | -71.8 | -12.4 |
| National | -26.5 | 4.3 | 24.4 |
Wigeon
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 0.0 | -99.5 | -99.3 |
| National | 0.9 | -17.0 | -18.2 |
Mallard
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | -46.8 | -77.5 | -72.7 |
| National | -11.3 | -19.7 | -19.1 |
Teal
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | -59.7 | -57.8 | -23.3 |
| National | 1.8 | 5.7 | 19.4 |
Coot
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | -89.8 | -93.8 | -92.5 |
| National | -10.1 | 1.1 | -23.2 |
Little Grebe
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 72.7 | 56.0 | 447.5 |
| National | 6.1 | 16.7 | 38.2 |
Lapwing
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 200.0 | -98.5 | -99.6 |
| National | -6.5 | -45.1 | -63.9 |
Curlew
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 47.2 | -40.4 | 430.0 |
| National | -9.4 | -23.7 | -43.1 |
Cormorant
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 14.5 | -70.1 | 2.4 |
| National | 38.5 | 8.4 | 42.9 |
Grey Heron
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Ballybutler (Butlerstown) Lake | 8.2 | -23.3 | -14.8 |
| National | 1.0 | -4.9 | 6.6 |
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)