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Red-breasted Merganser Mergus serrator [Linnaeus, 1758]
Other Names
Trends & Distribution
Breeding & Survival
Biometrics
Books & Links
Order:
Anseriformes
Family:
Anatidae
BTO Codes:
RM , REBME
EURING No:
2210
Number in Britain:
2200 pairs (Summer)
Conservation Status:
UK:
GREEN
European:
Not a species of concern
Global:
Least Concern
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IBC
Status in UK:
(A) Resident Breeder, Winter Visitor
Subspecies:
Monotypic
.
Length:
55 cm
Wingspan:
78 cm
Weight:
M/F: 1.1 kg
Scientific name from:
L.: mergus =a waterbird
and L.: serra =a saw
World Distribution:
BREEDS: n Eurasia & n North America, WINTERS: south to Mediterranean, Black Seas & n Mexico
Habitat:
Lakes, rivers, on migration also seacoasts
Diet:
Primarily fish, often pursued by swimming short distances
Population and Distribution
Population Trend:
No population trend available
Distribution:
New Atlas )
British Population Size:
Summer:
2150 pairs
in 1988-91
Winter:
9840 individuals
in 1986-91
First Record:
10th Century
[Fossil evidence from
Middle Pleistocene, c. 500,000 yr ago]
Habitat Occupancy (in the Breeding Season):
No habitat data from BBS
European Population Size:
Summer:
64 to 108 thousand pairs
Birds in Europe
Listed on the Appendices/Schedules of:
WBD(II*), Bern(III), Bonn(II), AEWA
Survey Results:
Breeding and Survival
Egg Size:
65 x 45 mm
Egg Weight:
72.0 g (of which 8 % is shell)
Number of Nest Records:
4
Clutch Size:
8 - 10 eggs
Incubation:
31 - 32 days
by the:
Female
Fledging:
60 - 65 days
as:
Precocial, downy
First Clutches Laid:
Unavailable
Number of Broods:
1
Number Ringed:
3
Adult Survival:
No data
Juvenile Survival:
No data
Age at First Breeding:
Typical Lifespan:
No data
Maximum Recorded Age:
12yr0m
(Sweden: 21yr 3m)
Biometrics
Ring Size:
G or F*
Wing Length
Adult:
Insufficient Data.
Juvenile:
Insufficient Data.
Male:
Insufficient Data
Female:
Insufficient Data
Weight
Adult:
Insufficient Data.
Juvenile:
Insufficient Data.
Male:
Insufficient Data
Female:
Insufficient Data
Other Names
Gaelic:
Sìolta-dhearg
Welsh:
Hwyaden Frongoch
Danish:
Toppet skallesluger
Dutch:
Middelste zaagbek
Finnish:
Tukkakoskelo
French:
Harle huppé
German:
Mittelsäger
Hungarian:
Örvös bukó
Icelandic:
Toppönd
Irish:
Síolta Rua
Italian:
Smergo minore
Norwegian:
Siland
Polish:
Szlachar
Portuguese:
Merganso-de-poupa
Spanish:
Serreta mediana
Swedish:
Småskrake
For More Information...
Books and Monographs:
Kear, J 2005 Ducks, geese and swans Oxford University Press
[598.48 KEA]
See Also:
All About Birds (Cornell Lab of Ornithology)
Gough, G.A. et al. (1998) Patuxent Bird Identification Infocenter
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