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Red-Shouldered Hawk Buteo lineatus Case Histories Case 1:
Older nestlings
reunited using a laundry basket nest Development Photos
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Species Notes
Red-shouldered
Hawks are particularly prone to sibling rivalry, and in most cases it is
probably not advisable to reunite a third juvenile to its family. There is
a real possibility that the youngest and weakest sibling may be forced out
by its larger, aggressive siblings. Even if the bird is returned to the
nest, it may not be able to obtain enough food from the parents to survive.
(See Case 4)
[1]
It was not difficult to record the alarm calls of an older juvenile Red-shouldered Hawk, but for birds that are old enough to make an alarm call, it is seldom necessary to use the recording, because the juvenile you are trying to reunite with the adults will almost certainly scream loudly and repeatedly as soon as it is removed from the carrying container. This will bring in the parents before you have even had a chance to climb up and place the bird in the nest basket. For very young nestlings, the calls obviously serve a different function, as the tiny birds cannot yet vocalize loudly. The alarm call may serve to attract the adult bird to the immediate area where the nestling is located.
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[1]
Crocoll, S. T. (1994). Red-shouldered Hawk (Buteo lineatus). The
Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell
Laboratory of Ornithology; Retrieved from The Birds of North American
Online database:
http://bna.birds.cornell.edu/BNA/account/Red-shouldered_Hawk/
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