I-WeBS Nanny Estuary & shore 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 Nanny Estuary & shore (site code 0V401) 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 | Nanny Estuary & shore - 5 Year | Nanny Estuary & shore - 12 Year | Nanny Estuary & shore - 23 Year | Long Term Trend |
|---|---|---|---|---|
| Golden Plover | -34.6 | -75.8 | -86.0 | Large Decline |
| Cormorant | -32.1 | -90.6 | -81.1 | Large Decline |
| Bar-tailed Godwit | -71.6 | -78.8 | -75.9 | Large Decline |
| Grey Plover | -65.1 | -79.8 | -75.5 | Large Decline |
| Great Crested Grebe | -76.8 | -73.5 | -74.7 | Large Decline |
| Dunlin | -59.7 | -51.2 | -44.3 | Moderate Decline |
| Turnstone | -50.0 | -74.5 | -43.6 | Moderate Decline |
| Shelduck | -45.9 | -41.1 | -33.3 | Moderate Decline |
| Sanderling | -75.3 | -71.4 | -29.5 | Moderate Decline |
| Lapwing | 118.6 | -11.3 | -29.3 | Moderate Decline |
| Ringed Plover | -50.0 | -68.3 | -23.2 | Intermediate Decline |
| Mallard | 34.5 | -35.1 | -6.3 | Intermediate Decline |
| Red-breasted Merganser | 27.8 | 104.4 | 4.5 | Stable or Increasing |
| Oystercatcher | 32.3 | -45.6 | 28.4 | Stable or Increasing |
| Grey Heron | 7.9 | -46.5 | 38.8 | Stable or Increasing |
| Curlew | 9.7 | -32.0 | 47.8 | Stable or Increasing |
| Knot | 32.1 | -75.2 | 76.2 | Stable or Increasing |
| Light-bellied Brent Goose | -42.3 | -48.6 | 133.3 | Stable or Increasing |
| Greenshank | 96.4 | 25.0 | 243.8 | Stable or Increasing |
| Redshank | -15.7 | -26.3 | 311.8 | Stable or Increasing |
| Wigeon | 16.4 | 33.3 | 966.7 | Stable or Increasing |
| Teal | 40.0 | 157.9 | 1533.3 | Stable or Increasing |
| Black-tailed Godwit | 27.4 | 116.1 | 1916.7 | Stable or Increasing |
| Little Egret | 76.3 | 103.0 | 6600.0 | Stable or Increasing |
| Little Grebe | 91.3 | 120.0 | NA | Not Applicable |
Species Analysis
Light-bellied Brent Goose
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -42.3 | -48.6 | 133.3 |
| National | -11.2 | 1.2 | 93.3 |
Shelduck
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -45.9 | -41.1 | -33.3 |
| National | 6.3 | -0.8 | 9.3 |
Wigeon
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 16.4 | 33.3 | 966.7 |
| National | 0.9 | -17.0 | -18.2 |
Mallard
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 34.5 | -35.1 | -6.3 |
| National | -11.3 | -19.7 | -19.1 |
Teal
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 40.0 | 157.9 | 1533.3 |
| National | 1.8 | 5.7 | 19.4 |
Red-breasted Merganser
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 27.8 | 104.4 | 4.5 |
| National | -12.9 | 5.2 | -14.7 |
Little Grebe
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 91.3 | 120.0 | NA |
| National | 6.1 | 16.7 | 38.2 |
Great Crested Grebe
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -76.8 | -73.5 | -74.7 |
| National | -39.5 | -6.1 | -10.8 |
Oystercatcher
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 32.3 | -45.6 | 28.4 |
| National | -17.5 | -31.1 | 10.8 |
Lapwing
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 118.6 | -11.3 | -29.3 |
| National | -6.5 | -45.1 | -63.9 |
Golden Plover
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -34.6 | -75.8 | -86.0 |
| National | -16.9 | -58.1 | -54.1 |
Grey Plover
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -65.1 | -79.8 | -75.5 |
| National | -30.6 | -39.4 | -57.8 |
Ringed Plover
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -50.0 | -68.3 | -23.2 |
| National | -4.3 | -26.8 | -1.1 |
Curlew
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 9.7 | -32.0 | 47.8 |
| National | -9.4 | -23.7 | -43.1 |
Bar-tailed Godwit
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -71.6 | -78.8 | -75.9 |
| National | -32.6 | -13.9 | -5.1 |
Black-tailed Godwit
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 27.4 | 116.1 | 1916.7 |
| National | 22.5 | 25.0 | 92.3 |
Turnstone
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -50.0 | -74.5 | -43.6 |
| National | -33.6 | -46.0 | -23.7 |
Knot
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 32.1 | -75.2 | 76.2 |
| National | 0.0 | -12.2 | -9.8 |
Sanderling
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -75.3 | -71.4 | -29.5 |
| National | -23.8 | -11.1 | 84.6 |
Dunlin
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -59.7 | -51.2 | -44.3 |
| National | 5.9 | -21.2 | -45.2 |
Redshank
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -15.7 | -26.3 | 311.8 |
| National | -14.0 | -28.4 | 6.7 |
Greenshank
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 96.4 | 25.0 | 243.8 |
| National | 0.9 | 7.3 | 41.0 |
Cormorant
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | -32.1 | -90.6 | -81.1 |
| National | 38.5 | 8.4 | 42.9 |
Grey Heron
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 7.9 | -46.5 | 38.8 |
| National | 1.0 | -4.9 | 6.6 |
Little Egret
| Site | 5 Year | 12 Year | 23 Year |
|---|---|---|---|
| Nanny Estuary & shore | 76.3 | 103.0 | 6600.0 |
| 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)