About Earthynature of Britain
  1. Home
  2. Species
  3. Red-breasted Merganser
Species · Birds

Red-breasted Merganser

Mergus serrator

59,855Records since 2000
JanuaryPeak month
114Counties with records
Least ConcernIUCN Red List

When it is recorded

Jan9,668
Feb6,660
Mar6,303
Apr5,395
May4,661
Jun3,144
Jul1,814
Aug1,394
Sep2,765
Oct5,527
Nov5,992
Dec6,176

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Highland Scotland5,049
2Cambridgeshire England3,289
3East Lothian Scotland2,646
4Shetland Islands —2,379
5Argyll and Bute Scotland2,157
6Dorset England1,735
7Fife Scotland1,554
8Na h-Eileanan Siar Scotland1,394
9Orkney Islands Scotland1,335
10Norfolk England1,280
11Cumbria England1,240
12Kent England1,161
13Conwy Wales1,047
14South Ayrshire Scotland980
15Portsmouth England875
29,213 England26,382 Scotland3,342 Wales856 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 114 counties in all.

About this species

Records since 2000
59,855
Peak month
January
Counties with records
114
IUCN Red List
Least Concern
Scientific name
Mergus serrator
Group
Birds
NBN Atlas records since 2000
39,358
Conservation designations
Birds Directive, Convention on Migratory Species, Birds of Conservation Concern, GB Red List (2001 IUCN criteria)
Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Anseriformes
Family
Anatidae
Genus
Mergus
Name with authority
Mergus serrator Linnaeus, 1758
Described
1758
Contributing datasets
28

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q189609 · GBIF 2498375