Puerto Rico Week continues today with another new endemic bird added to Birdorable: the Yellow-shouldered Blackbird! The Yellow-shouldered Blackbird is known locally as mariquita de Puerto Rico. or just mariquita.  Across South America, mariquita refers to a ladybug;...

The cloaca is an essential anatomical feature in birds (the organ also exists in reptiles, amphibians, and some fish). In birds, the cloaca is a single opening located at the base of the tail that serves multiple functions. It is the exit point for the digestive, urinary, and...

The Bushtit, sometimes called the American Bushtit, is a charming little bird that often goes unnoticed due to its diminutive size and subtle coloration. Measuring up to about 4.5 inches in length, this tiny songbird can be found across a wide range of habitats in western North...

When we think about urban environments, images of bustling streets, towering skyscrapers, and dense human populations come to mind. Yet amidst this concrete jungle, a surprising array of bird species not only survive but thrive. Adapting to city life involves a fascinating blend of biological resilience and behavioral...