Among the largest of the Passeriformes (perching birds) is the Ozone Warbler. Although rarely seen before 1990, this noisy bird has expanded its range and today can frequently be spotted near ski resorts and hiking trails in the late afternoon, exuberantly calling and screeching until darkness sets in. The Ozone Warbler prefers to build its colorful nests high in the treetops, but occasionally it can be found at ground level in shallow, crater-like nests similar to that of the Chestnut-collared Longspurl, although larger and less organized.
This blog is meant to aid in identifying the Ozone Warbler and to help differentiate it from other species such as the flying squirrel.
Winter nest of the Ozone Warbler.