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Side-by-Side Comparison

属性	Karoo Bustard	Little Bustard
学名	Heterotetrax vigorsii	Tetrax tetrax
目	Otidiformes	Otidiformes
科	Otididae	Otididae
保全状況	Least Concern	Near Threatened
体長	—	—
翼開長	68.4 cm (26.9 in)	47.9 cm (18.9 in)
体重	1560.0 g (55.03 oz)	840.6666666666666 g (29.65 oz)
食性	Omnivore of open grasslands, eating insects, small vertebrates, seeds, and green shoots. Beetles and grasshoppers …	Omnivore of European and Central Asian steppe; eats insects, clover, seeds, and green shoots. Beetles …
一腹卵数	1-2	2-6
Population Trend	—	—

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Habitat Comparison

共通生息地

🌾 Grassland

Karoo Bustard only

None

Little Bustard only

None

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Song & Call Comparison

Karoo Bustard

さえずり

Loud, low booming call; deep bass resonance carrying well across open dry African plains and grassland.

Little Bustard

さえずり

Loud, low booming call; deep resonant notes carrying impressively across open African semi-arid landscape.

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Geographic Range & Migration

Karoo Bustard

Endemic to the Karoo semi-desert of southern South Africa and southern Namibia. Resident in arid scrubland.

Little Bustard

Found in open grasslands and steppe from Western Europe to Central Asia. Partial migrant. Near Threatened.

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保全状況

Least Concern

Karoo Bustard

Near Threatened

Little Bustard

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How to Tell Them Apart

Karoo Bustard

羽毛

Cuban Lizard-cuckoo: brown above; buff below; very long graduated tail; red facial skin; yellow bill; Cuba endemic species; slender

Little Bustard

羽毛

Horsfield's Bronze-cuckoo: bronze-green above; white barred below; narrow incomplete bars; reddish eye; bronze-green iridescence

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About These Birds

Karoo Bustard

ボーリーズノガン（Heterotetrax vigorsii）は南アフリカの乾燥草原・カルー・低木地に生息するノガン科の中型ノガン（体長45〜55 cm）。縞模様の褐色と黒の羽衣が特徴。現地のカルー生態系の固有種。絶滅危惧種；農業・生息地の転換が脅威。

Little Bustard

ヒメノガンはヨーロッパと中央アジアの草原地帯に生息する中型のノガン科の鳥です。雄は繁殖期に特徴的な羽毛の飾りを持ちます。

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