The Jungle Nightjar Caprimulgus indicus is found from India eastwards through southeast and eastern Asia. A subspecies, the Japanese Jungle Nightjar C. i. jotaka, migrates in summer to the Japanese islands of Hokkaido, Honshu, Shikoku and Kyushu. Although sexing of this species has long been available, detailed information on aging had not been described. In an earlier paper, the author reported on molt and aging in autumn. This paper provides data on molt and aging in spring. The research was implemented at Watarase Marsh, Tochigi Prefecture, central Honshu in May, 2003. One male was captured and observed on May 17th. The data from this bird was compared with photographs and specimens obtained from other Japanese banding and recovery records. A total of six individuals were utilized for comparison. The results show that both adults and juveniles have a mixture of old and new feathers in spring. This indicated that they begin molting on their wintering area, but do not complete the molt until arriving in the breeding area. Both adults and juveniles have old (non-molted) feathers in their greater primary coverts. In Juveniles, however, these old feathers show a light-colored edging, which is absent in the adult (Fig. 1, left and Fig. 2, left). Both adults and juveniles also retain old tail feathers. Adults, however, tend toretain inner feathers, while juveniles retain outer feathers (Fig. 3). In addition, the old feathers of juveniles are thin and rounded, while those of adults are thick and angular (Fig. 1, right and Fig. 2, right). Based on data from this research and prior research conducted in autumn, a tentative schedule of molting can be reconstructed (Fig. 4). Juveniles begin molting into 1st winter plumage in the breeding area. During their first winter, they molt partially into adult plumage, but still retain some juvenile feathers when they arrive back in the breeding area.

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There are only a few scattered records to date of species in the Auk Family along the coastlines of the Kanto Region. This paper reports four records, including three collections of specimens, obtained in 2003 and 2004, of Thick-billed Murre Uria lomvia, at four ponts off the Pacific Ocean coast, in the region from the Kashimanada Ibaraki Prefecture south to Kujukuri hama in Chiba Prefecture (Fig. 1).
1. Two individuals in winter plumage were observed 300-500m offshore of Kujukurihama, along sandy beach, on February 8th, 2003.
2. One female in 1st winter plumage was recovered washed up on a sandy beach at Choshi, Chiba Prefecture, on February 10th, 2004 (Fig. 2). This bird later died.
3. One bird in winter plumage was recovered dead on a sandy beach at Hasaki, Ibaraki Prefecture, on February 13th 2004 (Fig. 3).
4. One bird in winter plumage was recovered washed up on a sandy beach at Yasashigaura, Chiba Prefecture, on April 13th 2004 (Fig. 4).

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The Izu Island Thrush Turdus celaenops is an endemic Japanese species that breeds and inhabits all the year round in the Izu and Tokara islands. The distribution is sporadic throughout the range. Until the 1980s, substantial populations were found on the breeding islands of Miyake, Mikura and Aogashima in the Izu group, but these populations are being adversely impacted due to predation by exotic species, and also by recent volcanic eruptions. Some winter records of this species have been obtained on the Izu and Boso Peninsulas, and on Hatsushima Island in Kanagawa Prefecture. The Tokara population has also been noted to decrease during the winter months. In the past, some observations recorded as this species may actually have been of the large Japanese Brown Thrush Turdus chrysolaus orii or the Japanese Brown Thrush T. c. chyrsolaus. In this paper, photographs of two individuals obtained in Chiba Prefecture are examined, and determined to be of the Izu Island Thrush. One individual (Fig. 1) was observed around Choshi City, on the Pacific Ocean Coast, from December 15th 1983 to April 7th 1984. The black coloring on the head and tail stood out distinctly against the reddish brown on the head and chest. In addition, the eye ring was thick, and distinctive yellowish brown. The second individual was observed at Sanbu Town, on the Boso Peninsula, from April 25th to May 2th, 1992. Distinguishing characteristics were similar to the first individual, including distinctive yellow beak and legs. These two records clearly confirm that the Izu Island Thrush does winter in Chiba Prefecture, and will help to clarify the seasonal movements of this endemic species.
For the Izu Island Thrush, the wing point is either at P6 or P7, while on both subspecies of the Japanese Brown Thrush the point is at P7 or P8. In the Japanese Brown Thrush subspecies, P5 is always shorter than P9, while in the the Izu Islands Thrush P5 may be the same size as P9, or slightly shorter, or even a bit longer than P9 (Fig. 3).

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