Gourt > Science > Biology > Flora and Fauna > Animalia > Chordata > Aves > Falconiformes (10)
The order Falconiformes is a group of about 290 species of birds that include the diurnal birds of prey. Raptor classification is fraught with difficulty and the order is treated in several different ways.
Classification problems
Traditionally, all the raptors are grouped into 4 families in this single order. However, in Europe, it has become common to split the order into two: the falcons and caracaras remain in the order Falconiformes (about 60 species in 4 groups), while the remaining 220-odd species (including the Accipitridae—eagles, hawks, and many others) are placed in the separate order Accipitriformes. The American Ornithologist's Union leaves Falconidae and Accipitridae in Falconiformes, but places the New World vultures (family Cathartidae) with the storks in Ciconiiformes following the influential Sibley-Ahlquist taxonomy, in which all the raptors are placed into Ciconiiformes, but the Cathartids are considered to be outside the lineage that includes other raptors.
The idea that Falconiformes should be divided into many orders is because of the suggestion that the order may not share a single lineage that is exclusive of other birds. The most controversial suggestion - but also the most well-supported one - is that Cathartidae are not Falconiformes but are related to the storks, in the separate order Ciconiiformes. However morphological evidence supports the common ancestry of the Falconiformes, and the Strigiformes may be Falconiformes as well.
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Falconry :: Hunting
Raptors :: Birds
SOS Falconiformes do Brasil! Aves essenciais para o equilÃbrio ecológico são mortas indiscriminadamente em td o paÃs! Paremos com isso já!
MarcyoMoura (Marcio de Moura) Thu, 15 Oct 2009 16:26:03 -0000
SOS Falconiformes do Brasil! Aves essenciais para o equilíbrio ecológico são mortas indiscriminadamente em td o país! Paremos com isso já!
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