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Providing evidence to improve practice

Individual study: Rehabilitation and release appears to be largely successful for bald eagles Haliaeetus leucocephalus in Minnesota, USA

Published source details

Martell M., Redig P., Nibe J., Buhl G. & Frenzel D. (1991) Survival and movements of released rehabilitated bald eagles. Journal of Raptor Research, 25, 72-76


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Rehabilitation of injured and treated birds Bird Conservation

A replicated study in Minnesota, USA (Martell et al. 1991), found that, of 19 bald eagles Haliaeetus leucocephalus that were rehabilitated and released with radiotrackers in the winters (November-February) of 1987-90 from a rehabilitation centre, 13 (68%) definitely survived for more than six weeks, three (16%) definitely died and contact with three was lost within ten days of release. One female bred and fledged a chick in both 1989 and 1990. Eagles ranged from 2-610 km from their release sites, which were located along the Mississippi River. Eagles were admitted to the centre for reasons ranging from starvation to bone fractures.