This is a resident breeding kingfisher which occurs in the American tropics from southern Mexico south through Central America to western Ecuador, and then around the northern Andes cordillera in the east to central Bolivia and central Brazil.
The species occupies the entire Amazon basin and the Tocantins River drainage adjacent in Pará state Brazil. It also occurs on Trinidad.
It is 13 cm (5.1 in) long and weighs 10–16 g (0.35–0.56 oz). It has the typical kingfisher shape, with a short tail and long bill.
It is oily green above, with a yellow-orange collar around the neck, rufous underparts and a white belly.
The female has a narrow green breast band. Young birds resemble the adults, but have paler rufous underparts, no breast band, and speckled wings and flanks.
This tiny kingfisher occurs in dense forests and mangrove swamps along small streams or rivers with heavily vegetated banks.
The unlined nest is in a horizontal tunnel up to 40 cm (16 in) long made in a river bank, earth heap, or occasionally an arboreal termite nest.
The female lays three, sometimes four, white eggs.
Reference: Wikipedia