Spix's Guan
Penelope jacquacu
Large, stocky brown bird. Largely arboreal, but often seems too large or clumsy for its tree-dwelling habits. Calls loudly when flushing from a tree and makes crashing noises as it lands roughly in another tree. Found around forest edges and young forest as well as in more mature forests. Typically found singly or in pairs, occasionally in larger groups. Larger and darker than chachalacas with more prominent red skin on throat.
Identification
The four subspecies of Spix's guan differ in weight and plumage, and there are intergrades between them. Their length is 66–76 cm (26–30 in). The male and female nominate P. j. jacquacu weigh 1.24–1.36 kg (2.7–3.0 lb) and 1.14 kg (2.5 lb) respectively. The male P. j. orienticola weighs 1.40–1.78 kg (3.1–3.9 lb) and the female 1.27–1.72 kg (2.8–3.8 lb). The nominate subspecies is bronzy olive green above and bright reddish below. "Grant's" is much darker; the upper parts have a blue-green gloss and the red underside is dark. P. j. speciosa's plumage is similar to that of the nominate subspecies and P. j. orienticola's size and color scheme are between those of the nominate and "Grant's".
Taxonomy
Four subspecies of Spix's guan are recognized, "Grant's" guan (P. j. granti) and the "Spix's guan" group of P. j. jacquacu, P. j. orienticola, and P. j. speciosa. It was at times considered conspecific with dusky-legged guan (P. obscura) or crested guan (P. purpurascens). P. j. speciosa was once considered a race of dusky-legged guan, and "Grant's guan" was formerly considered a separate species.
- Scientific name
- Penelope jacquacu
- Authority
- Spix, 1825
- Order
- Galliformes
- Family
- Cracidae
- Genus
- Penelope
Range and habitat
Spix's guan is found in the upper Orinoco River and western Amazon River basins of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. From north to south the subspecies sequence is granti, orienticola, jacquacu, and speciosa. It inhabits both terra firma and várzea (seasonally flooded) forest. In the upper elevations of Peru and Bolivia it is in cloud forest and at lower elevations it is in humid rainforest. The species is assumed to be sedentary.
- Migration
- Resident species
Behavior
The timing of Spix's guan's breeding varies geographically; examples include from January to May in Venezuela and August and September in Peru. The one nest that has been described was made of leaves and placed about 5 m (16 ft) up in a tree. The incubation and fledging periods are not known.<p>Spix's guan forages singly or in small family groups, mostly from the middle to the tops of trees but in some regions on the ground. Its diet is mainly fruits and seeds though it has also been reported to follow army ants to take arthropods.
Conservation
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds
Chiguanco Thrush
Turdus chiguanco
Fairly common in Andes and western desert foothills. Found in varied habitats from parks and gardens to farmland and other semiopen habitats with hedges and taller trees. Two distinct populations: in northern and western birds, sexes look alike, dark ashy gray overall with a yellow bill and amber eyes; in southern and eastern birds, male is dull blackish with a yellow bill and eyering and female is dark ashy gray overall with a yellow bill. No similar species in Chile, but in Bolivia and Peru compare with larger Great Thrush, which prefers more humid habitats.
Wire-tailed Manakin
Pipra filicauda
Spectacular manakin with very long tail filaments and piercing white eyes. Males are bright yellow from the face to the underparts and bright red from the crown to the mantle; otherwise they are black. Females are dull olive-green with a yellow tinge to the chin and breast and have shorter tail filaments. Usually found near streams in humid forests, including gallery forests and old second growth.
Maroon Oriole
Oriolus traillii
Large, pale-eyed songbird of lower and middle elevations of montane forests. Male blood red with inky black head and wings and dark bill; female similar but less richly colored. Juvenile brown above, pale with dark stippling below, paler bill, and tawny undertail coverts. Birds in Taiwan and central Vietnam are much brighter red overall. Usually seen in pairs or small flocks, sometimes with mixed-species flocks. Pairs often engage in an ethereal duet: male gives a series of melodic notes, to which the female responds with a long, airy whistle. Also gives harsh, rasping calls.
Start Your Bird Watching Journey
Identify a bird outdoors and keep the field guide close for your next observation.