Disclosed is well birds are prevented from entering from the veranda inside, without compromising the appearance and excellent durability, the mounting work is also compared with the attachment operation of the conventional bird damage prevention member, dramatically short providing bird damage prevention device capable of performing at the time. Multiple and A net assembly 2 surrounded by a border of the periphery, and connecting fitting 3 which connects the border mutual said network member 2 which is disposed adjacent to each other, the network member 2 by the connecting fitting 3 suspending the upper end of the connection has been linked network body to the position of a predetermined height of the structure, and the hanging bracket 4 attached to the structure, it will provide a bird damage prevention tool 1 with a. .BACKGROUND【課題】鳥などがベランダから内部に侵入することを防止するとともに、外観を損なうことなく、耐久性にも優れ、取り付け作業も従来の鳥害防止具の取り付け作業と比較すると、飛躍的に短時間で行うことが可能な鳥害防止具を提供する。【解決手段】外周を枠線で囲った網体2と、隣接して配設された前記網体2の枠線相互を連結する連結金具3と、前記網体2が前記連結金具3によって複数連結された連結網体の上端部を構造物の所定高さの位置に吊り下げる、前記構造物に取り付けられた吊り下げ金具4と、を備える鳥害防止具1を提供する。【選択図】図1