Search results
Results from the WOW.Com Content Network
The black morph is similar but has a strongly black-spotted underside, rather than finely barred as in the peregrine and the brown-morph gyrfalcon. White form gyrfalcons are the only predominantly white falcons. Silver gyrfalcons resemble a light grey lanner falcon of larger size. The species shows no sex-based colour differences; juveniles are ...
As with hawks and owls, falcons exhibit sexual dimorphism, with the females typically larger than the males, thus allowing a wider range of prey species. [10] As is the case with many birds of prey, falcons have exceptional powers of vision; the visual acuity of one species has been measured at 2.6 times that of human eyes. [11]
The female is larger than the male. It resembles its relative in general structure. Female Barbary falcons are as large as male peregrine falcons. Adults have paler grey-blue upperparts than the peregrine falcon and often have a buff wash to the barred underparts, whereas the larger species has a whiter background colour.
The Barbary falcon's shoulder and pelvis bones are stout by comparison with the peregrine falcon and its feet are smaller. [37] Barbary falcons breed at different times of year than neighboring peregrine falcon subspecies, [12] [29] [30] [32] [37] [54] [55] but they are capable of interbreeding. [56]
A prairie falcon in Arizona.. The prairie falcon (Falco mexicanus) is a medium-sized falcon found in Western North America.A separate species from the peregrine falcon, with which it shares some visual similarities, the prairie falcon is, essentially, an arid-climate divergence of earlier peregrine falcon lineage.
Falconidae is a family of diurnal birds of prey and includes caracaras, laughing falcon, forest falcons, falconets, pygmy falcons, falcons and kestrels.They are small to medium-sized birds of prey, ranging in size from the black-thighed falconet, which can weigh as little as 35 grams (1.2 oz), to the gyrfalcon, which can weigh as much as 1,735 grams (61.2 oz).
Despite being bird-eaters and bigger than sociable weavers, the pygmy falcons largely leave the latter alone, though they do occasionally catch and eat nestlings and even adults. [ 6 ] In addition, falcons are obligate users of white-headed buffalo weaver nests; therefore, they experience all of the benefits these nests provide without the ...
The falcons and caracaras are around 65 species of diurnal birds of prey that make up the family Falconidae (representing all extant species in the order Falconiformes).The family likely originated in South America during the Paleocene [1] and is divided into three subfamilies: Herpetotherinae, which includes the laughing falcon and forest falcons; Polyborinae, which includes the spot-winged ...