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What is the Online Raptor Center?
The Online Raptor Center was made to provide information about raptors worldwide and promote understanding of raptors.
I continuously update the site, changes occur often. I hope you enjoy exploring the Online Raptor Center and that you learn
alot! -
Brent
When did raptors originate?
Several families of owls came to be during the Paleogene Epoch which started 65 million years ago, at the end of
the Cretaceous Period, and ended 57 million years ago at the begining of the Eocene Epoch. New-world style
vultures originated in the Eocene Epoch, which started 57 million years ago and ended 37 million years ago. Buteos and
true New World vultures apear in the Oligocene Epoch starting at the end of the Eocene and ending 26 million years ago. The
osprey and falcons came into exsintence along with Old world vultures in the Miocene Epoch, which followed the Oligocene and
ended 7 million years ago. This osprey was found in California and was called Pandion homalopteron. The Old World
vulture, Paleoborus, was found in South Dakota. After that, the rest of the bird genera would be in exsistence by
the end of the Pliocene, 2 million years ago, including the booted eagles (genus Aquila), which are considered to
be the most evolutionarily advanced raptors next to the falcons.
What is a Raptor?
This can be a hard question to answer, even for some experts, they know a raptor when they see one, but it
can be hard to explain. Raptors have hooked beaks and talons for grasping and tearing meat. All raptors eat other animals.
Vultures dont have sharply hooked talons (which are flattened) or beaks (not as sharply curved), being an exception to
that rule. Their beaks aren't as sharply hooked either. Raptors are hawks, falcons, eagles, vultures, and owls. Although they
occupy the same place in the food chain, owls and diurnal raptors are not closely related, thus the reason why they
are classified into seperate orders, falconiiformes (Diurnal raptors) and the strigiformes (owls). Most raptors
(not vultures) are built to persue and kill thier prey. That does not mean that just because a bird eats other animals
it is a raptor, or bird of prey. Robins eat insects but are not raptors, just as roadrunners kill thier food sometimes, but
they too aren't raptors. Raptor are endothermic, or warm-blooded. They have higher metabolism than mammals do. Raptors, like
all birds, have light and hollow bones. All diurnal raptors, with the exception of the osprey, have a Anisodactylous
toe arrangement, that is having three toes foreword and one backward, this toe arrangement is also found in passerine (perching)
birds. The osprey, and owls have a zygodactylic toe arrangement, which is having to toes forward and two backward.
This helps the osprey grab fish and hold on.
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