Dendrocopos kizuki, Yungipicus kizuki, and Japanese pygmy woodpecker have four subspecies。
Small star-headed woodpeckers are resident birds, often active alone except during the breeding period, and can be found in family groups of 3-5 individuals in the later breeding period. Usually, the sound is low and monotonous, like "Zha", and the cry is loud, high-pitched "khit" or "khit-khit-khit" and the continuous "kzz-kzz" sound and tapping. The wings flap greatly during flight. Often fly from one tree to another to feed, generally from the tree to the bottom of another tree, and then climb up the tree to feed. It mainly feeds on various insects and larvae such as Chrysozoon, Longiceps, Minutus, pyritiger, Coleoptera, etc., and occasionally eats plant fruits and seeds。
The breeding period of the small star-headed Woodpecker is from April to June. In late March, pairs have been paired and courtship behavior has appeared, often flying and chasing through the canopy, while flying and calling. Nest on broadleaf trees with rotten heartwood such as poplars and manchuria. In late April, the nest began to be pecked by both male and female birds. The height of the nest hole from the ground is mostly 3-11 meters, the diameter of the opening is 3.5-4.5 cm, the inner diameter of the hole is 7-8 cm, and the depth of the hole is 14-16 cm. The nest is empty of any interior material, and sometimes a few wood chips remain. Spawning begins in early May, breeding 1 litter a year, laying 4-7 eggs per litter, usually 5. Oval white, smooth without spots, 19 mm x 15 mm in size. Male and female birds incubate their eggs in turn. The chicks are late sex and are fed by both sexes.
It was included in the List of Beneficial Terrestrial Wildlife under State Protection or of Important economic and scientific research Value issued by the State Forestry Administration of China on August 1, 2000.
Listed on the International Union for Conservation of Nature (IUCN) 2012 Red List of Threatened Species ver 3.1 - Not Threatened (LC).
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