Tracking urban Peregrine Falcon fledglings. Rehabilitation experiences (Otero et al., 2023).

Over the past few years, fledglings of the peregrine falcon born in urban nests in Madrid have been rescued from the ground following their early first flights. The methodology followed for their rehabilitation was to return them to the nest after a veterinary examination and a brief period of muscle training at GREFA’s Wildlife Hospital and Recovery Center located in Majadahonda, Madrid. In 2022, three of these specimens were tagged with GPS-GSM trackers to evaluate the effectiveness of this rehabilitation technique. Thanks to this data, we have been able to analyze the areas the falcons frequented during their first flights during their period of parental dependence, for roosting and feeding, as well as to observe potential intraspecific interactions. This rehabilitation approach has achieved a 100% success rate, as the reintroduced fledglings were accepted back by their parents. From studying the release method, we can conclude that there is a high juvenile mortality rate among these individuals as three others that were tagged and directly released into the environment, died due to electrocution. Spatial Data movements, maximum daily distances, total distances traveled, and roosting areas are some of the variables that have been analyzed in this study.