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Snapshot
Primary Traits
675 g
0 m
49
—
Record section
Identity and Taxonomy
Scientific identity, taxonomic placement, and source lineage.
Scientific name
Larus crassirostris
English name
Black-tailed Gull
Order
Charadriiformes
Family
Laridae
Genus
Larus
Species
crassirostris
Data source
HBW3, BOTW, D07
Record section
Conservation and Range
Threat status and geographic distribution signals.
Conservation status
Least Concern
Range restricted
No
Island endemic
No
Biogeographic realm
IP
Latitudinal zone
Temperate
Record section
Measurements
Mass and elevation values from the stored record.
Minimum female mass
No data
Maximum female mass
No data
Minimum male mass
No data
Maximum male mass
No data
Minimum unsexed mass
420 g
Maximum unsexed mass
930 g
Average mass
675 g
Minimum elevation
No data
Typical lower elevation
0 m
Typical upper elevation
0 m
Maximum elevation
No data
Elevation range
0 m
Typical elevation
0 m
Record section
Ecology
Habitat, diet, and specialization profile.
Primary habitat
Coastal
Habitat breadth
2
Primary diet
Fish
Diet breadth
3
Diet specialization index
1.22
Record section
Behavior and Reproduction
Breeding, nesting, incubation, and social traits.
Social behavior
Colonial
Mating system
No data
Cooperative breeding
No data
Nest type
No data
Nest substrate
Ground
Minimum broods per year
No data
Maximum broods per year
No data
Minimum clutch size
2
Maximum clutch size
3
Incubating sex
No data
Minimum incubation period
24 d
Maximum incubation period
27 d
Minimum fledging period
35 d
Maximum fledging period
40 d
Nest parasitism
No data
Average clutch size
2.5
Average fledging period
37.5 d
Record section
Mobility and Flight
Flight ability and movement pattern.
Flight status
Flies
Mobility patterns
Migratory, Dispersive