The blue-necked tanager (Tangara cyanicollis) is a species of bird in the Thraupidae family. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and heavily degraded former forest. The blue-necked tanager averages 12 cm in length and weighs approximately 17 g. They have a blue hood and throat. The wing coverts, wing edges, and rump are turquoise to a greenish straw color. The posterior underparts are black, violet, or blue. The juveniles are brownish gray, with a hint of adult coloration. Coloration of adults varies slightly by region. The beaks, legs, and feet are black. The diet of the blue-necked tanager consists of fruits, berries, flower blossoms a