An innovative solution to a persistent problem
The iconic Puerta de Alcalá, one of the most representative monuments of Madrid, will from May 1 have an unusual but effective team: two eagles and a hawk that will patrol the skies of Madrid. This aerial squadron's main mission is to scare away the pigeons that threaten the integrity of the monument with their droppings, which can cause irreparable damage to the stone.
The Madrid City Council, under the direction of José Luis Martínez-Almeida, has decided to implement this strategy after consulting public health and conservation experts. The decision is based on studies showing that deterrent flights with birds of prey are an effective and respectful alternative to keeping the monument clean without resorting to more aggressive methods.
The squadron consists of a Harris's eagle, a red-tailed hawk, and a hybrid hawk, all specifically trained to perform deterrent flights. Their presence is enough to make pigeons reconsider their nesting choice in this iconic location. This method not only aims to keep the environment clean but also to preserve the historical structure of the monument.
Often underestimated, pigeon droppings contain corrosive substances such as ammonia and uric acid that can severely damage limestone. Over time, these residues create a small ecosystem that feeds bacteria and fungi, which can further compromise the structural stability of the monument. Therefore, the use of birds of prey presents itself as a natural solution to this challenge.
Madrid thus revives an ancient practice: falconry. This technique has been used since ancient times to control bird populations in urban environments. The delegate for the cultural area, Marta Rivera de la Cruz, has expressed her satisfaction with the results obtained so far and hopes that this initiative will continue to be successful in the future.
Built in the 18th century during the reign of Charles III, the Puerta de Alcalá is not only a tourist attraction; it is also an Asset of Cultural Interest (BIC). Since 2021, it has been part of the Landscape of Light, declared a World Heritage Site by UNESCO. Every day, it receives thousands of visitors who appreciate its beauty and history.
From next month, if anyone observes majestic shadows flying over this emblematic monumental arch, they should not be alarmed; it will simply be part of the effort to care for one of Spain's most important cultural treasures through ingenious and natural methods.
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