Common Kestrel vs Eastern Bluebird
Falco tinnunculus เปรียบเทียบกับ Sialia sialis
Side-by-Side Comparison
| คุณสมบัติ | Common Kestrel | Eastern Bluebird |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Falco tinnunculus | Sialia sialis |
| อันดับ | Falconiformes | Passeriformes |
| วงศ์ตระกูล | Falconidae | Turdidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | 34.0 cm (13.4 in) | 17.5 cm (6.9 in) |
| กว้างปีก | 74.0 cm (29.1 in) | 27.0 cm (10.6 in) |
| น้ำหนัก | 190.0 g (6.70 oz) | 31.0 g (1.09 oz) |
| อาหาร | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … |
| จำนวนไข่ | 1-7 | 4-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Common Kestrel only
Eastern Bluebird only
ไม่มี
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
Common Kestrel
A shrill, repeated 'kee-kee-kee-kee' or 'kik-ik-ik', especially near nest. Alarm call is a nasal chattering. Generally less vocal than larger falcons. Calls ring clearly in open country.
Eastern Bluebird
A rich, melodious warbled 'chur-wi, tur-a-lee' song. Both sexes sing. Call is a soft, musical 'turee'. Song is gentle and flute-like, suggesting a small thrush. Given from exposed perch.
Geographic Range & Migration
Common Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
สถานะการอนุรักษ์
Common Kestrel
Eastern Bluebird
How to Tell Them Apart
Common Kestrel
Males have a blue-grey head and tail with a rufous back spotted with black. Females are rufous-brown with heavy barring. Both have a dark moustachial stripe.
Short, hooked grey bill with a yellow cere
Eastern Bluebird
Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.
Short, thin, dark bill
About These Birds
Common Kestrel
The common kestrel is Europe's most abundant falcon, famous for its ability to hover motionless in the wind while scanning for prey. Research has shown kestrels can see ultraviolet light, allowing them to detect vole urine trails that reflect UV. The species has adapted remarkably well to urban environments.
Eastern Bluebird
The eastern bluebird is a beloved symbol of happiness in North America. Once declining due to habitat loss and competition from introduced species, populations recovered dramatically thanks to a massive citizen science nest box campaign. These gentle thrushes form loose winter flocks and huddle together in nest boxes during cold snaps.