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Colour polymorphism occurs in several animal taxa and in around 3.5% of bird species. This phenomenon is disproportionately high in raptors, affecting approximately 30% of species. However, there are only four research studies in wild Accipitridae species and two in Falconidae species on colour plumage polymorphism. Here, we used the data collected over 23 years (1995‐2017) for non‐tagged individuals...