You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Natal Dispersal in Relation to Nutritional Condition in Spanish Imperial Eagles
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 23, No. 1 (Jan. - Mar., 1992), pp. 104-107
Stable URL: http://www.jstor.org/stable/3676434
Page Count: 4
You can always find the topics here!Topics: Siblings, Bird nesting, Juveniles, Blood, Birds of prey, Territories, National parks, Animal nesting, Owls
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
I analyzed the factors determining the length of the predispersal period in the Spanish Imperial Eagle Aquila adalberti, using the information supplied by 21 radio-tagged young in Doñana National Park (SW Spain) in 1986-1988. The average length of the predispersal period was 9.2 d. Urea and uric acid levels in blood, a measure of body condition, were significantly related to the length of this period. The results suggest that factors other than competition with adults, make young disperse as soon as possible. Similarities in the dispersal tendency between siblings from the same brood seem to be an effect of covariance with other factors linked to the nest than a genetically determined behaviour.
Ornis Scandinavica (Scandinavian Journal of Ornithology) © 1992 Nordic Society Oikos