2017 Volume 66 Issue 1 Pages 29-33
The Japanese Leaf Warbler Phylloscopus xanthodryas is a common summer visitor to high montane areas of Japan, yet basic information on its breeding behavior remains unclear. In this paper, we report that it breeds twice per breeding season (n = 2), and that there is variation in the sharing of food provisioning between the parents of 10-12 day old nestlings. Two nests were cared for only by females. Parental food provisioning showed great variation. These observations are based on individual identification by means of unique color rings and DNA sexing during five breeding seasons.
