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Snapshot
Primary Traits
1,817.5 g
0 m - 2,400 m
49
—
Record section
Identity and Taxonomy
Scientific identity, taxonomic placement, and source lineage.
Scientific name
Sarkidiornis melanotos
English name
Knob-billed Duck
Order
Anseriformes
Family
Anatidae
Genus
Sarkidiornis
Species
melanotos
Data source
HBW1, BOTW, D23
Record section
Conservation and Range
Threat status and geographic distribution signals.
Conservation status
Least Concern
Range restricted
No
Island endemic
No
Biogeographic realm
Cosmopolitan
Latitudinal zone
Tropical
Record section
Measurements
Mass and elevation values from the stored record.
Minimum female mass
1,030 g
Maximum female mass
2,330 g
Minimum male mass
1,300 g
Maximum male mass
2,610 g
Minimum unsexed mass
No data
Maximum unsexed mass
No data
Average mass
1,817.5 g
Minimum elevation
No data
Typical lower elevation
0 m
Typical upper elevation
2,400 m
Maximum elevation
No data
Elevation range
2,400 m
Typical elevation
1,200 m
Record section
Ecology
Habitat, diet, and specialization profile.
Primary habitat
Wetland
Habitat breadth
4
Primary diet
Plant
Diet breadth
3
Diet specialization index
0.92
Record section
Behavior and Reproduction
Breeding, nesting, incubation, and social traits.
Social behavior
Pairs and family groups
Mating system
Monogamous, Polygynous
Cooperative breeding
No data
Nest type
Cavity (tree)
Nest substrate
Ground, Tree
Minimum broods per year
No data
Maximum broods per year
No data
Minimum clutch size
6
Maximum clutch size
20
Incubating sex
Female
Minimum incubation period
28 d
Maximum incubation period
30 d
Minimum fledging period
70 d
Maximum fledging period
No data
Nest parasitism
Victim of Parasitism
Average clutch size
13
Average fledging period
70 d
Record section
Mobility and Flight
Flight ability and movement pattern.
Flight status
Flies
Mobility patterns
Migratory, Irregular/Nomadic, Sedentary