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Snapshot
Primary Traits
77.5 g
0 m - 40 m
49
—
Record section
Identity and Taxonomy
Scientific identity, taxonomic placement, and source lineage.
Scientific name
Zapornia atra
English name
Henderson Island Crake
Order
Gruiformes
Family
Rallidae
Genus
Zapornia
Species
atra
Data source
HBW3, BOTW
Record section
Conservation and Range
Threat status and geographic distribution signals.
Conservation status
Vulnerable
Range restricted
Yes
Island endemic
Yes
Biogeographic realm
Oceania
Latitudinal zone
Temperate
Record section
Measurements
Mass and elevation values from the stored record.
Minimum female mass
66 g
Maximum female mass
88 g
Minimum male mass
69 g
Maximum male mass
87 g
Minimum unsexed mass
No data
Maximum unsexed mass
No data
Average mass
77.5 g
Minimum elevation
No data
Typical lower elevation
0 m
Typical upper elevation
40 m
Maximum elevation
No data
Elevation range
40 m
Typical elevation
20 m
Record section
Ecology
Habitat, diet, and specialization profile.
Primary habitat
Forest
Habitat breadth
3
Primary diet
Invertebrate
Diet breadth
1
Diet specialization index
1.52
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
Cup/Bowl, Sphere
Nest substrate
Tree
Minimum broods per year
1
Maximum broods per year
2
Minimum clutch size
2
Maximum clutch size
3
Incubating sex
Both
Minimum incubation period
21 d
Maximum incubation period
No data
Minimum fledging period
28 d
Maximum fledging period
No data
Nest parasitism
No data
Average clutch size
2.5
Average fledging period
28 d
Record section
Mobility and Flight
Flight ability and movement pattern.
Flight status
Flightless
Mobility patterns
Sedentary