PURPLE MARTIN - Progne subis
North America
Itís the biggest swallow in North America. Their dark blackish blue feathers have an iridescent luster caused by the refraction of incident light, giving them a bright blue to intense violet appearance. The reproductive range extends from central Alberta to the eastern United States. Dimensions: 19 - 20 cm. Wingspan: 39 - 41 cm.  
frecce

 

2021

 

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