| Philadelphia vireo | |
|---|---|
| |
| Conservation status | |
 Least Concern (IUCN 3.1) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Vireonidae |
| Genus: | Vireo |
| Species: | V. philadelphicus |
| Binomial name | |
| Vireo philadelphicus (Cassin, 1851) | |
| |
The Philadelphia vireo (Vireo philadelphicus) is a small North American songbird in the vireo family (Vireonidae). "Vireo" is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch. The specific philadelphicus is for the city of Philadelphia.
Description
Adults are mainly olive-brown on the upperparts with yellow underparts; they have dark eyes and a grey crown. They have no wing bars and no eye ring. There is a dark line through the eyes and a white stripe just over them. They have thick blue-grey legs and a stout bill. The Philadelphia vireo is similar in appearance to the warbling vireo, but can be reliably distinguished by having much yellower underparts, and dark lores.
| Standard Measurements | |
|---|---|
| length | 4.5–5 in (110–130 mm) |
| weight | 12 g (0.42 oz) |
| wingspan | 8 in (200 mm) |
| wing | 65.4–70 mm (2.57–2.76 in) |
| tail | 45–52 mm (1.8–2.0 in) |
| culmen | 9–11 mm (0.35–0.43 in) |
| tarsus | 16–17 mm (0.63–0.67 in) |
Ecology
Their breeding habitat is the edges of deciduous and mixed woods across Canada. They make a basket-shaped cup nest in a fork of a tree branch, usually placed relatively high. The female lays 3 to 5 lightly spotted white eggs. Incubation, by both parents, lasts up to 14 days.
These birds migrate to Mexico and Central America. This vireo is a very rare vagrant to western Europe. They are unlikely to visit Philadelphia, except in migration.
They forage for insects in trees, sometimes hovering or flying to catch insects in flight. They also eat berries, especially before migration.
The songs and calls of Philadelphia vireo are three to five notes, weeezh weeezh weeezh, very similar to those of the red-eyed vireo, but with slightly longer pauses between phrases and higher notes.
References
- BirdLife International (2016). "Vireo philadelphicus". IUCN Red List of Threatened Species. 2016: e.T22705240A94007901. doi:10.2305/IUCN.UK.2016-3.RLTS.T22705240A94007901.en. Retrieved 12 November 2021.
- Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 302, 402. ISBN 978-1-4081-2501-4.
- "Vireo". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ Godfrey, W. Earl (1966). The Birds of Canada. Ottawa: National Museum of Canada. pp. 318–319.
- ^ Sibley, David Allen (2000). The Sibley Guide to Birds. New York: Knopf. p. 344. ISBN 0-679-45122-6.
- Robbins, Chandler S.; Bruun, Bertel; Zim, Herbert S. (1983). Birds of North America: A Guide to Field Identification. Illustrated by Arthur Singer (Revised ed.). Golden Press. p. 266. ISBN 0-307-37002-X.
External links
- Philadelphia Vireo - Vireo philadelphicus - USGS Patuxent Bird Identification InfoCenter
- Philadelphia Vireo Species Account - Cornell Lab of Ornithology
- "Philadelphia Vireo media". Internet Bird Collection.
- Philadelphia Vireo photo gallery at VIREO (Drexel University)
- Philadelphia Vireo species account at Neotropical Birds (Cornell Lab of Ornithology)
- Interactive range map of Vireo philadelphicus at IUCN Red List maps