Every living bird is as much a living dinosaur as any other. Birds are the last surviving branch of the dinosaur lineage, and nest firmly within that clade based on morphology and quite well-represented fossil history. While large flightless birds most convey the "raptor" image, it does not make them any more closely related to other dinosaurs than any other bird. The most basal living birds are paleognaths, which are represented by ratites and tinamous.
The raptors of popular culture are highly inaccurate to the current understand of paleontology, and would have been feathered, highly bird-like animals in life. The most up to date theories as to their hunting techniques are that they hunted like flightless birds of prey, by using the talons to restrain prey while probably starting to feed while it was still alive. They are assumed to have had wing plumage by the presence of quill knobs in their arm bones, which are indicative of flight feathers in birds. Some dromaeosaurs - the proper term for the "raptor" dinosaurs - were probably able to fly, as they were preserved with large wing plumage (Microraptor most notably), whereas the larger species may have been secondarily flightless and used their feathered arms to balance on the backs of prey animals as, again, eagles may be seen to when attacking large animals. As such, the secretary bird is not that close of an analogue behaviorally to extinct raptor dinosaurs - at least not to the more well-known ones, like Velociraptor or Deinonychus.
Art by Emily WiIloughby, Wikimedia Commons
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Another tidbit: It is often suggested that the leg scales of birds are indicative of a dinosaur ancestry, but recent research suggests the reverse is true. Leg scales are not related structurally to reptile scales and appear to be a mutated feather structure, originating from feather-producing genes. So the ancestor of birds had a fully feathered body, and secondarily developed "scaled" legs!
. And what birds would you consider as modern dinosaurs. For example, ostriches.
