Boundary of Matsuyama C and Masaki T |
Estuaries with tidal flat |
Shorebirds |
Estuary of Shigenobu-gawa |
Birds are observed in relatively large population sizes during the spring and autumn migrating seasons. Visitation of more than 1% of the minimum estimated population of Numenius phaeopus, and more than 0.25% of that of Charadrius mongolus, Heteroscelus brevipes, Arenaria interpres and Calidris alpina has been recorded. Visitation of Tringa totanus and Numenius madagascariensis (both RDB species) has also been recorded. |