Species Detail - Brown Rat (Rattus norvegicus) - Species information displayed is based on all datasets.

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).
Live Map

Species image

Rattus norvegicus
Brown Rat
NHMSYS0000080212 RecommendedWell-formed
Invasive Species: High Risk Invasive Species (2013 Report)
ranor
(Berkenhout, 1769)
Terrestrial mammal
Species
2064
490
119
01/01/1911
29/04/2023
1 January (recorded in 1969)
31 December (recorded in 1968)
National Biodiversity Data Centre, Ireland, Brown Rat (Rattus norvegicus), accessed 20 August 2025, <https://maps.biodiversityireland.ie/Species/119483>

Records per month (across all datasets)

Records per year (across all datasets)