Blue-crowned Trogon

Identification

The blue-crowned trogon is a compact bird, measuring about 24 cm in length and weighing 39 to 63 grams. Sexual dimorphism is pronounced in this species. Males display striking plumage with a glossy blue crown and an orange orbital ring, a distinctive greenish-blue breast separated from a rosy-red belly by a narrow white breastband, and a metallic bronzy-green back. The tail is greenish-blue above with black and white barring beneath. Females are considerably duller, with grey replacing the male's green tones and a pinkish-red belly; they feature white arcs before and after the eye rather than an orange ring. Males produce a distinctive fast, evenly-paced song of repeated "kow" notes lasting 4-5 seconds, while both sexes emit a "churrr" call.

Range & Habitat

This trogon is distributed widely across South America, occurring in Brazil, Argentina, Bolivia, Colombia, Ecuador, Paraguay, and Peru, primarily throughout the Amazon Basin south of the Amazon River and extending southeastward. Three subspecies occupy different regions: the nominate subspecies inhabits Amazonian central Brazil eastward to the Atlantic; T. c. peruvianus ranges from the Andean foothills of southern Colombia through Ecuador and Peru into Amazonian Brazil; and T. c. behni is found in eastern and southern Bolivia, southwestern Brazil, Paraguay, and northern Argentina.

The species is remarkably adaptable, occupying diverse forest types including várzea, gallery, tall secondary, and dry semi-deciduous forests, as well as savanna woodland, dry palm forest, caatinga, and scrublands. It exploits all vertical levels from understory to canopy. Elevational range varies across its distribution, seldom exceeding 500 metres in the northern part of its range but reaching 1,500 metres in Argentina and 1,750 metres in Bolivia.

Behaviour & Diet

The blue-crowned trogon feeds on a wide variety of insects, spiders, and fruits, and occasionally joins mixed-species foraging flocks. Breeding seasons vary geographically, commencing as early as May in Colombia and occurring from October to December in Argentina. The species nests in cavities within arboreal termitaria, with clutches typically containing two or three eggs.

Best Time & Places to See It

The blue-crowned trogon occurs throughout much of the Amazon Basin and adjacent regions, though its abundance varies considerably across its range, being rare in some areas and common in others. Several protected areas in Bolivia, Brazil, and Argentina support populations of this species. Timing should be aligned with regional breeding seasons to increase sighting probability: May in Colombia and October to December in Argentina offer optimal opportunities. The bird's preference for various forest types and elevation zones means it may be encountered in multiple habitat types across its vast range.

Photography Tips

Photographers should focus on capturing the striking sexual dimorphism of this species. Males present compelling subjects with their vibrant blue crowns, orange eye-rings, and contrasting white breastbands—shoot from angles that showcase the brilliant metallic sheen of the dorsal plumage. Females, though subtler in coloration, offer excellent opportunities to document the species' grey and pinkish tones. The bird's use of multiple forest strata means varying your positioning from understory to canopy level. Early morning is typically optimal for activity and light. The bird's association with mixed-species foraging flocks may increase encounter frequency, and its distinctive vocalizations provide audio cues for locating individuals in dense vegetation.