The Northern Royal Flycatcher is a species of bird in the Tyrannidae family. It is found in Mexico, south through most of Central America, to north-western Colombia and far western Venezuela. Its natural habitat is subtropical or tropical moist lowland forests. The Royal Flycatcher Onychorynchus coronatus is widely distributed from Mexico through central America and into South America where it occurs in the pacific lowlands of Ecuador, the Amazon basin and Atlantic coastal forests of southeastern Brazil. Five subspecies are recognised: Mexicanus distributed from Mexico to Honduras; Fraterculus from Honduras to northern Colombia; nominate Coronatus in much of the low lying Amazon basin (here including the form castehaui from the Peruvian Amazon and finally, two isolated populations Occidentalis from western Ecuador and Swainsonii from south-east Brazil. The Royal Flycatcher is classified as Least Concern. Does not qualify for a more at risk category. The Royal flycatcher, like many flycatchers, likes to dart out from branches to catch flying insects or pluck them from leaves.
Like the other royal flycatchers of the neo-tropics, this species has a large, brilliantly-coloured, fan-shaped crest, which is usually flat but occasionally erected to reveal its dazzling scarlet colour (yellow in the female) ornately decorated with black and steel-blue markings .The rest of the plumage is rather unspectacular in comparison, being uniformly tawny-brown on upper parts, dull yellow-orange on underparts, rufous on the rump and tail and whitish on the throat. Considering the potential threats to Swainsonii and Occidentalis, it seems a priority that further research be undertaken to clarify the taxonomic position of the Royal Flycatcher complex.