References Congo serpent eagle



cited texts

brown, leslie h.; urban, emil k.; newman, kenneth (1982). birds of africa volume i. london: academic press. isbn 0-12-137301-0. 
ferguson-lees, james; david a. christie (2001). raptors of world. singapore: houghton mifflin. isbn 0-618-12762-3. 
thiollay, jean-marc (1994). family accipitridae (hawks , eagles) . in del hoyo, josep; elliott, andrew; sargatal, jordi. handbook of birds of world. 2. new world vultures guineafowl. barcelona: lynx editions. isbn 84-87334-15-6. 






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