Journal
AVIAN BIOLOGY RESEARCH
Volume 15, Issue 3, Pages 125-132Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/17581559221107083
Keywords
Birds of prey; morbidity; rehabilitation; trauma; poisoning; generalised linear model
Funding
- University of Veterinary Sciences Brno [2021ITA31]
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This study documents the causes of admission and outcomes of treatment in 68 white-tailed eagles admitted to rescue centers in the Czech Republic. The results show that at least a third of the admissions were caused by anthropogenic factors, and trauma-related cases were the most common reason for admission. This study provides valuable insights for conservation research in quantifying threats towards species of conservation concern.
Admission records from wildlife rescue centres can help identify causes of morbidity for species of conservation concern, and to assess the effectiveness of rehabilitation. This study documents the causes of admission and outcomes of treatment in 68 white-tailed eagles admitted to rescue centres in the Czech Republic. We determine the factors that contribute to the outcome of rehabilitation. Most admitted birds were juveniles (1(st) calendar year [CY]; n = 25), followed by immatures (2(nd)-4(th) CY; n = 23) and adults (>= 5 CY; n = 17). We categorised admission causes into (1) trauma-related cases (most often unknown trauma, followed by collision and intraspecific fights), (2) non-trauma cases (weakness, toxicosis and becoming stuck in mud or entangled in rope) and (3) orphaned young birds. Trauma-related admissions were most numerous totalling 59%, non-trauma admissions accounted for 35% with the remaining 6% comprising orphaned young birds. At least a third of eagle admissions were caused by anthropogenic factors. In total, 40% of admitted eagles were released back to the wild, 35% died or were euthanized and 25% remained permanently in captivity. Eagles admitted due to non-trauma-related causes had a significantly higher probability of being released into the wild than those admitted due to trauma. Immature eagles were less likely to be released than juvenile individuals. Admissions data are valuable for conservation research, allowing for trends in threats towards species of conservation concern to be quantified, over time, throughout human-dominated landscapes.
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