Deforestation Threatens One of the World’s Largest Eagles

Harpy Eagle Close Up

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Harpy Eagle.

Harpy eagles (Harpia harpyja) — which are amongst the world’s biggest eagle types — battle to feed offspring in greatly deforested locations of the Amazon, according to a research study released in Scientific Reports.

Everton Miranda and coworkers discovered that shrew eagles depend on particular victim that resides in canopy forests, consisting of sloths and monkeys. Eaglets starved in locations of high logging where canopy-based food was restricted.

The authors observed victim types, how regularly prey was provided, and approximated the weight of victim in 16 harpy eagle nests in Amazonian forests in Mato Grosso, Brazil utilizing video cameras and recognizing victim bone pieces. They likewise referenced maps and Google Earth to compute logging levels 3-6km around nests. The authors recognized 306 victim products, almost half (49.7%) of which were two-toed sloths, brown capuchin monkeys and grey woolly monkeys. The authors’ observations suggested that shrew eagles in deforested locations did not change to alternative victim, and provided canopy-based victim less regularly and with smaller sized approximated weight. In landscapes with 50-70% logging, 3 eaglets passed away from hunger, and no nests were discovered in locations with logging over 70%.

Harpy Eagle

Harpy Eagle.

The authors computed that locations with over 50% logging disagree for harpy eagles to effectively raise offspring and price quote that around 35% of northern Mato Grosso disagrees for reproducing harpy eagles. This might have triggered a decrease in varieties of reproducing sets by 3,256 given that 1985.

The authors conclude that as reproducing harpy eagles depend on particular food and hardly ever hunt in deforested locations, harpy eagle survival depends upon forest preservation.

Reference: “Tropical deforestation induces thresholds of reproductive viability and habitat suitability in Earth’s largest eagles” by Everton B. P. Miranda, Carlos A. Peres, Vítor Carvalho-Rocha, Bruna V. Miguel, Nickolas Lormand, Niki Huizinga, Charles A. Munn, Thiago B. F. Semedo, Tiago V. Ferreira, João B. Pinho, Vítor Q. Piacentini, Miguel Â. Marini and Colleen T. Downs, 30 June 2021, Scientific Reports.
DOI: 10.1038/s41598-021-92372-z