Pterodroma sandwichensis

GPTKB entity

Statements (54)
Predicate Object
gptkbp:instance_of gptkb:bird
gptkbp:adult_plumage more mottled
dark upperparts
gptkbp:breeding_behavior low
gptkbp:breeding_range 3 to 4 years
small to medium
Hawaiian islands
gptkbp:breeding_season April to September
gptkbp:call low-frequency sounds
gptkbp:clutch_size 1 egg
gptkbp:coloration dark brown and white
dark brown above, white below
more mottled than adults
gptkbp:common_name gptkb:Hawaiian_Petrel
gptkbp:conservation_efforts habitat restoration
gptkbp:conservation_status Endangered
gptkbp:cultural_significance important in Hawaiian culture
gptkbp:diet zooplankton
fish and squid
similar to adults
gptkbp:egg_color gptkb:white
gptkbp:egg_size about 70 x 45 mm
gptkbp:family gptkb:Procellariidae
gptkbp:first_described_by 1789
gptkbp:fledging_period about 90 days
gptkbp:foraging_behavior surface feeding
gptkbp:habitat oceanic islands
gptkbp:habitat_preference steep cliffs
https://www.w3.org/2000/01/rdf-schema#label Pterodroma sandwichensis
gptkbp:incubation_period about 50 days
gptkbp:length 40 to 50 cm
gptkbp:migration non-migratory
short distances
not migratory
gptkbp:native_range gptkb:Hawaii
gptkbp:nest_location on cliffs or slopes
gptkbp:nest_material grass and feathers
gptkbp:nesting May to October
affected by predators
return to the same site
gptkbp:nesting_site burrows
gptkbp:order gptkb:Procellariiformes
gptkbp:population estimated in hundreds
gptkbp:population_trend decreasing
gptkbp:predators rats
gptkbp:research_status studied for conservation efforts
gptkbp:scientific_name gptkb:Pterodroma_sandwichensis
gptkbp:social_structure colonial
gptkbp:threats habitat loss
gptkbp:vocalization distinctive calls
gptkbp:weight 600 to 800 g
gptkbp:wingspan 100 to 110 cm
gptkbp:bfsParent gptkb:Hawaiian_Petrel
gptkbp:bfsLayer 5