Wild Bird Index (forest & farmland specialist birds) [BIP]
Wild Bird Index (forest & farmland specialist birds) [BIP]
Indicator description
The Wild Bird Index (WBI) is the average trend in relative abundance of a group of bird species during the breeding season, often grouped by their association and dependence on a particular habitat. It is particularly suited to tracking trends in the condition of habitats through obligate or specialist species.
Birds are recognised as good indicators of environmental change and as useful proxies of wider changes in nature. The Wild Bird Index measures average population trends of a suite of representative wild birds as an indicator of the general health of the environment.