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 Blackwater Estuary (site code 0M404) 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 Blackwater Estuary - 5 Year Blackwater Estuary - 12 Year Blackwater Estuary - 23 Year Long Term Trend
Golden Plover -75.9 -98.0 -97.8 Large Decline
Bar-tailed Godwit -69.3 -93.3 -95.7
Dunlin -55.9 -85.1 -95.6
Lapwing -61.6 -89.3 -90.7
Turnstone -58.0 -74.7 -59.6
Wigeon -15.6 -30.6 -54.5
Mallard -43.8 -54.7 -50.2
Curlew 9.0 -11.7 -40.2 Moderate Decline
Redshank -13.0 -52.7 -39.7
Shelduck -34.3 -35.8 -27.7
Oystercatcher -57.0 -32.2 -23.5 Intermediate Decline
Teal -21.1 -12.5 -16.1
Cormorant -37.4 -41.4 -12.0
Little Egret -9.0 -19.0 123.7 Stable or Increasing
Black-tailed Godwit 17.6 17.6 168.7
Light-bellied Brent Goose -32.5 76.6 538.5

Species Analysis

Light-bellied Brent Goose

Shelduck

Wigeon

Teal

Mallard

Cormorant

Little Egret

Oystercatcher

Golden Plover

Lapwing

Dunlin

Black-tailed Godwit

Bar-tailed Godwit

Curlew

Redshank

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)