The Great Cormorant Phalacrocorax carbo is generally considered to be a major predator of Sweetfish Plecoglossus altivelis released primarily for recreational fishing. We counted Great Cormorants, herons and anglers along 400 km of rivers and at seven lakes in or close to Tochigi Prefecture at the end of May, June and August 2005. We recorded a total of 433 Great Cormorants, 516 herons of four species, and 736 anglers. Along rivers suitable for Sweetfish angling, Great Cormorants were fewer than at other sites and fewer than Grey Herons Ardea cinerea, Great Egrets Egretta alba, or anglers.
The roosting sites of a male Copper Pheasant Syrmaticus soemmerringii, were confirmed by radio tracking in the Tama Forest Science Garden, Forestry and Forest Products Research Institute, Hachioji, Tokyo. One ground site, one presumable ground site used for six nights (both narrow flat areas on a high, steep slope), and six arboreal sites used for 33 nights, (tree branches 1-5 m off the ground), were found. The particular sites were presumably chosen because they offered easy escape from terrestrial predators.
The influence of habitat characteristics on the occurrence of Japanese Pygmy Woodpecker Dendrocopos kizuki in urban open spaces was investigated. Out of 21 open spaces in Tokyo, six were occupied by woodpeckers during the breeding season and 13 during the non-breeding season. Using generalized linear models and a model selection approach, it was revealed that forested areas in open spaces influenced the presence or absence of woodpeckers. No correlations between the presence of woodpeckers, the degree of isolation of open spaces and the density of dead trees (all predicted as necessary for nesting and feeding) were found. Possible interpretations are discussed.