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Snapshot
Primary Traits
230.3 g
0 m - 500 m
48
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Record section
Identity and Taxonomy
Scientific identity, taxonomic placement, and source lineage.
Scientific name
Hypotaenidia owstoni
English name
Guam Rail
Order
Gruiformes
Family
Rallidae
Genus
Hypotaenidia
Species
owstoni
Data source
HBW3, BOTW
Record section
Conservation and Range
Threat status and geographic distribution signals.
Conservation status
Critically Endangered
Range restricted
Yes
Island endemic
Yes
Biogeographic realm
Oceania
Latitudinal zone
Tropical
Record section
Measurements
Mass and elevation values from the stored record.
Minimum female mass
170 g
Maximum female mass
274 g
Minimum male mass
174 g
Maximum male mass
303 g
Minimum unsexed mass
No data
Maximum unsexed mass
No data
Average mass
230.3 g
Minimum elevation
No data
Typical lower elevation
0 m
Typical upper elevation
500 m
Maximum elevation
No data
Elevation range
500 m
Typical elevation
250 m
Record section
Ecology
Habitat, diet, and specialization profile.
Primary habitat
Forest
Habitat breadth
3
Primary diet
Omnivore
Diet breadth
6
Diet specialization index
0.74
Record section
Behavior and Reproduction
Breeding, nesting, incubation, and social traits.
Social behavior
No data
Mating system
Monogamous
Cooperative breeding
No data
Nest type
Half cup
Nest substrate
Ground
Minimum broods per year
No data
Maximum broods per year
No data
Minimum clutch size
3
Maximum clutch size
4
Incubating sex
Both
Minimum incubation period
19 d
Maximum incubation period
No data
Minimum fledging period
No data
Maximum fledging period
No data
Nest parasitism
No data
Average clutch size
3.5
Record section
Mobility and Flight
Flight ability and movement pattern.
Flight status
Partial
Mobility patterns
Sedentary