Anna's Hummingbird vs นกเลขานุการ
Calypte anna เปรียบเทียบกับ Sagittarius serpentarius
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | นกเลขานุการ |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Sagittarius serpentarius |
| อันดับ | Caprimulgiformes | Accipitriformes |
| วงศ์ตระกูล | Trochilidae | Sagittariidae |
| สถานะการอนุรักษ์ | Least Concern | Endangered |
| ความยาว | 10.0 cm (3.9 in) | 130.0 cm (51.2 in) |
| กว้างปีก | 12.0 cm (4.7 in) | 210.0 cm (82.7 in) |
| น้ำหนัก | 4.3 g (0.15 oz) | 3700.0 g (130.51 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| จำนวนไข่ | 2 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Anna's Hummingbird
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
นกเลขานุการ
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
Song & Call Comparison
Anna's Hummingbird
Male produces a complex, scratchy song with buzzy 'dzzzzt' notes. Gives a nasal 'chee-chee-chee'. Males sing year-round, even in winter; one of few hummingbirds with true song.
นกเลขานุการ
A surprisingly deep, resonant croaking 'kowrr-kowrr' often heard at dawn on African savannas. Also gives pig-like grunting sounds. Mostly silent compared to true songbirds.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
นกเลขานุการ
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
สถานะการอนุรักษ์
Anna's Hummingbird
นกเลขานุการ
How to Tell Them Apart
Anna's Hummingbird
Metallic bronze-green upperparts. Males have an iridescent rose-red crown and gorget. Females have green upperparts with grey underparts and a small red gorget patch.
Medium-length, straight, thin black bill
นกเลขานุการ
Grey body plumage with black flight feathers and thigh feathers. Distinctive long black crest feathers trail from the back of the head. Orange-red bare facial skin.
Short, strong, hooked greyish bill with a yellowish cere
About These Birds
Anna's Hummingbird
Anna's hummingbird is the most common hummingbird along the Pacific coast and one of only three species resident in the United States year-round. Males perform spectacular dive displays, plummeting from 40 meters and pulling up with a loud chirp produced by tail feathers. Their body temperature can drop to near ambient at night to conserve energy.
นกเลขานุการ
The secretary bird is the only raptor that hunts primarily on foot, striding through grasslands on crane-like legs up to 1.2 meters tall. Its name may derive from the crest feathers resembling quill pens tucked behind a secretary's ear. The species is classified as Endangered due to habitat loss and decline across much of its range.