Crested Treeswift vs Grey-rumped Treeswift
Hemiprocne coronata ile kıyaslandığında Hemiprocne longipennis
Side-by-Side Comparison
| Özellik | Crested Treeswift | Grey-rumped Treeswift |
|---|---|---|
| Bilimsel Ad | Hemiprocne coronata | Hemiprocne longipennis |
| Takım | Caprimulgiformes | Caprimulgiformes |
| Familya | Hemiprocnidae | Hemiprocnidae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 30,4 cm (12.0 in) | 33,5 cm (13.2 in) |
| Ağırlık | 27,400000000000002 g (0.97 oz) | 35,9 g (1.27 oz) |
| Beslenme | Aerial insectivore making sallying flights from an exposed perch to capture flying insects; returns to … | Perch-sallying aerial hunter catching small flying insects, including flies and beetles, in swift low-altitude pursuits. |
| Kuluçka Büyüklüğü | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Crested Treeswift
Loud, shrill 'kik-kik-ki-ki'; sharp metallic screech; calls from high perch in South Asian forest; alarm a rapid screeching series; contact a thin high-pitched whistle
Grey-rumped Treeswift
High, screaming 'keeer-keeer'; shrill piercing calls from forest canopy; metallic quality; calls from prominent high perch in Southeast Asian forest; alarm a sharp scream
Geographic Range & Migration
Crested Treeswift
Found across the Indian subcontinent and Southeast Asia from India east to Indochina. Resident in open deciduous forest and edge up to 1,500 m.
Grey-rumped Treeswift
Found from southern India through the Thai-Malay Peninsula to Sumatra, Java, and Borneo. Resident in open forest and forest edge.
Koruma Durumu
Crested Treeswift
Grey-rumped Treeswift
How to Tell Them Apart
Crested Treeswift
Males grey above with blue-grey gloss; long erectile blue-grey crest; chestnut ear patch; white supercilium; underparts white with grey flanks; females similar but lack chestnut ear patch; elegant arboreal treeswift.
Grey-rumped Treeswift
Males dark blue-grey upperparts with grey rump; chestnut ear coverts; white supercilium; underparts whitish with pale grey flanks; females lack chestnut ear patch; notably pale grey rump contrasts with darker …
About These Birds
Crested Treeswift
A medium-sized treeswift (21-23 cm) with a broad, swept-back crest and long, deeply forked tail. Silver-grey plumage with a pale face and dark ear patch. Found in open forests from India to Southeast Asia. Aerial insectivore perching prominently on bare branches between sallies.
Grey-rumped Treeswift
A medium-sized treeswift (20-23 cm) found in lowland forests of Southeast Asia from the Malay Peninsula to Borneo and the Philippines. Dark brown plumage with a contrasting grey rump. Aerial insectivore, often perching conspicuously on high exposed branches in small groups.