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The nest is in a burrow excavated by both birds of the pair in a low vertical riverbank, or sometimes a quarry or other cutting. The straight, gently inclining burrow is normally 60–90 cm (25–35 in) long and ends in an enlarged chamber. [8] The nest cavity is unlined but soon accumulates a litter of fish remains and cast pellets. [13]
Once a pair of birds has mated, both members of the pair dig the nest; a burrow in a river bank, a hollow in a large branch or a termite mound are prime examples of nest location. [16] The female lays a clutch of 3 to 6 glossy white, rounded eggs, measuring 25 mm × 22 mm (0.98 in × 0.87 in), which are incubated for 17–18 days by both ...
The nest building begins with both birds flying into a suitable mud wall until an indentation is made where they can find a perch hold. They subsequently perch and continue digging the nest with their bills. Nest tunnels in a haystack have also been recorded. [21] A single clutch of 4–7 round white eggs is typical. The eggs take 20–22 days ...
The paradise kingfishers of New Guinea have unusually long tails for the group. The kookaburra has a call which sounds like laughter. Like many forest-living kingfishers, the yellow-billed kingfisher often nests in arboreal termite nests. The black-backed dwarf kingfisher is considered a bad omen by warriors of the Dusun tribe of Borneo.
The nest is a short burrow into a round chamber within an arboreal termite nest, around 4–12 m (13–39 ft) above the ground. [5] Three to six (usually 4 or 5) white shiny eggs are laid, measuring 25 mm × 22 mm (0.98 in × 0.87 in). [8] Both parents (and possibly any helpers present) incubate the eggs for 18 to 21 days. [5]
The nest is a hole, either a natural tree hole or a burrow excavated by the birds themselves in a rotten tree, arboreal termite nest or earth bank. [10] They will also occupy old woodpecker holes. A clutch of usually two to five rounded, whitish eggs are laid directly on the floor of the burrow with no nest material used.
Nest holes may sometimes be used for roosting. [15] In 1947, British zoologist Hugh B. Cott noticed while skinning birds that hornets were attracted to certain birds but avoided the flesh of pied kingfishers. This led to a comparative study of edibility of birds and he suggested that more conspicuously plumaged birds may be less palatable.
Tree kingfishers are monogamous and territorial, although some species, including three kookaburras, have a cooperative breeding system involving young from earlier broods. The nest is a tree hole, either natural, and old woodpecker nest, or excavated in soft or rotting wood by the kingfishers. Several species dig holes in termite nests. No ...
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