Avifauna of Shimokita Peninsula, Aomori, with ecological notes

Abstract

Avifauna of four areas in Shimokita Peninsula, the northern extrimity of Honshû, Japan, was surveyed during 1964-1965.
In all 101 species were recorded which comprised 75 species in summer and early autumn 1964, and 69 in winter 1965.
The Long-tailed Rose-Finch (Uragus sibiricus), only once found breeding in Shimokita, was recorded in summer for the second time, and the Glaucous-winged Gull (Larus glaucescens), the rare northern gull only recorded from Miyako Bay, was observed in Mutsu Bay, February 1965.
List of the species recorded are given in tables shown by observation area and habitat division, with a diagramic figure of ecological distribution of birds.