A joint Japan-Korea bird-banding research project was conducted on the remote Islands, south-west Korea from 2005 to 2007. A total of 734 birds belonging to 63 species were captured and released, and 45 birds belonging to 15 species were recaptured. The dominant species' were Yellow-browed Bunting, Emberiza chrysophrys,Japanese White-eye, Zosterops japonicus,Little Bunting, E. pusilla,Chestnut Bunting, E. rutila, and Black-faced Bunting, E. spodocephala. The number of species and birds banded in spring were greater than that in autumn. Only 36 species were captured in autumn. These records suggest that the migration routes of some species vary seasonally. All records of recaptured birds in this research project were recaptured at their release sites; however, there were seven recorded individuals of four species (Japanese Thrush, Turdus cardis, Middendorff's Grasshopper Warbler, Locustella ochotensis, Black-browed Reed-warbler, Acrocephalus bistrigiceps, and Siberian Rubythroat, Luscinia calliope) as we moved between Japan and Korea in 1970 to 2016 (Yamashina institute for Ornithology; permit No. 29-133). These records suggest the existence of passerine migration routes from Japan to southern China via Korea.

A total of 734 birds belonging to 63 species were captured in a bird banding survey conducted on a remote island off the coast of South Korea. We compiled fragmentary information for molting, classification and identification of subspecies, sex, and age for 40 of the 63 species.

A joint Japan-Korea bird-banding research project was conducted in the Nakdong River Estuary, Busan, southeast Korea from 2009 to 2011. A total of 734 birds belonging to 34 species were captured and released, and 15 birds of four species were recaptured. The dominant species' were Yellow-throated Bunting, Emberiza elegans, Vinous-throated Parrotbill, Paradoxornis webbianus, Daurian Redstart, Phoenicurus auroreus, Pallas's Reed Bunting, E. pallasi, and Reed Bunting, E. schoeniclus. Environmental preferences for each species were as follows: Yellow-throated Bunting and Daurian Redstart were mostly observed in dry grassland, Pallas's Reed bunting and Reed bunting were mostly observed in wet reed beds.

734 birds belonging to 34 species were captured in a bird banding survey conducted in Busan, South Korea. Herein, we compiled fragmentary information for molting, classification and identification of subspecies, sex, and age for 15 of these species.

Measurements of bird body parts, such as wing and tail length, are important for identifying species, subspecies, sex, and age. Herein, we report the measurements obtained from a bird banding survey conducted in Busan, South Korea.

Because the subspecies' of the Blue-and-white Flycatcher Cyanoptila cyanomelana has been reorganized, it is necessary to reorganize the Japanese subspecies name. The species, cumatilis, has become independent; thus the Japanese name, Chosen-Oruri, should be used for the revived subspecies, intermediate, due to its distribution and the naming process.

A roosting flock of Little Ringed Plover was observed at a sports park in Arakawa lowland, Kanto Plain. Observations were conducted from 2015 to 2019. In July and August, 2015, and August 2016, 10 to 29 plovers roosted on the grass break of a baseball ground. At the end of August 2016, kestrels approached the plovers and roosting was no longer observed. This roosting area is approximately 450 m away from the roosting area of plovers observed in 1990 and 1991.

Herein, we report a deformity observed on the beak of a Brambling (Fringilla montifringilla). On November 2, 2018, we found a dead individual on a load in Nigata City, Japan. The beak of this individual had a malformed needle-like protrusion growing from the base of the left lower mandible.

The Golden-crowned Sparrow, Zonotrichia atricapilla, is species of bird that sometimes straggles into Japan as accidental an visitor. On December 21, 2019, a Golden-crowned Sparrow of unknown sex with winter plumage was captured, and was the first individual to be banded in Japan, on the Sagami River riverbed in Kadosawabashi, Ebina City, Kanagawa Prefecture, and the second recorded sighting of this species in the Kanagawa Prefecture. The bird was captured with a mist net, and each body part was measured and photographed. The bird was tagged with a numbered metal ring (No. 3H-52538 from the Ministry of the Environment). In Japan, from Hokkaido to Kagoshima Prefecture, there have been 21 sightings of the Golden-crowned Sparrow. Eighteen of the 21 were visual observations and taking photographs. Five of the 21 were long-term observations for several months during overwintering. Thirteen sightings were during spring, which suggests that the spring migration season of this species is from mid-April to mid-May in Japan. Seven of 11 sightings during winter, suggests that the wintering habitats of Z. atricapilla in Japan were mainly on riverbeds, along rivers, ponds, and wetlands, which is very similar to their wintering habitat in North America. The foraging environments of Z. atricapilla in their wintering sites in Japan were presumably grounds in or near the slightly wet thickets where amur silver grasses, reeds, and willow shrubs are mixed and densely grown.

On April 21, 2021, a Eurasian Nuthatch, Sitta europaea, was captured and banded. This is the first record S. europaea at the Sekiya coastal forest plantation in our research history in Sekiya, which includes the banding and release of more than 200,000 birds since 1987. According to records from the Yamashina Institute for Ornithology, only six Eurasian Nuthatches have been banded and released in Niigata Prefecture over the last 56 years (1963–2019). All six were recorded in the Joetsu region, and five of the six were captured in the highland area, while no record was found in the Kaetsu region of the Niigata Prefecture. In this case, we observed an individual in the woods located between the Sea of Japan and a coastal residential area.Here, we discuss possible reasons for the presence of the Eurasian Nuthatch in our area, which is an unlikely habitat for this species.