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Long-winged Harrier (Circus buffoni)
[order] Falconiformes | [family] Accipitridae | [latin] Circus buffoni | [UK] Long-winged Harrier | [FR] Busard de Buffon | [DE] Weissbrauenweihe | [ES] Aguilucho de Azara | [IT] Albanella di Buffon | [NL] Buffon-kiekendief | [SU] Aka
Characteristics
A typical harrier with dihedral (V-shape) flight. With long wings and a white body, occurs in a dark and light morph (see picture). Normal head and back are black, with white throat and supercilium (eye stripe). Below white with black breast band, underwing dark grey with black wing tips. Upperwing grey, female is like male but brown above. Legs and feet yellowish.
| wingspan min.: | | cm | wingspan max.: | | cm |
| size min.: | 48 | cm | size max.: | 56 | cm |
| incubation min.: | 0 | days | incubation max.: | 0 | days |
| fledging min.: | 0 | days | fledging max.: | 0 | days |
| broods: | 1 | | eggs min.: | 2 | |
| | | | eggs max.: | 4 | |
Click items below to expand
The Long-winged Harrier is distributed from venezuela the Guianas (and Trinidad) to North Argentina and Central Chile. In Suriname a definite breeder although a nest has never been found. Observed over rice fields and wet fields in the coastal region. Lowland tropical zones, wet areas like marsches, open fields, rice fields and savanna. Nest in grassland on the ground in rushes. 3-4 eggs are laid. No further data. Small birds, frogs, reptiles and mammals. This species has a large range, with an estimated global extent of occurrence of 6,100,000 km2. It has a large global population estimated to be 10,000-100,000 individuals (Ferguson-Lees et al. 2001). Global population trends have not been quantified, but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern. Migratory, at least in southernmost populations, insufficient data to assess status (resident, migratory or wintering) throughout Brazilian distribution. Birds in North South America were thought to be all migrants from South, but breeding record from Trinidad suggests that others may breed in appropriate habitat in this region. Records from Pacific slope in Colombia and Chile suggest species may occasionally cross Andes. Occasional visitor to Tierra del Fuego, recently recorded on Falkland Islands. article number 1 Title
Long-Winged Harrier Predation on Wattled Jacana Eggs
Author(s): DAVID R. OSBORNE and R. BEISSINGER
Abstract: Long-winged Harriers (Circus buffoni) prey on small birds, mammals, and reptiles (ffrench, A Guide to the Birds of Trinidad and Tobago, 1973:1131. Although they take eggs of various species of birds (..[more]..
Source: Wilson Bulletin: Vol. 91, No. 3
download full text (pdf)
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