The destruction of their nests and the disappearance of their breeding grounds is a major threat to birds that inhabit buildings and human infrastructure. Every spring, numerous nests of protected species such as swallows, planes, swifts, kestrels or storks are destroyed or disappear, directly to avoid alleged nuisance or indirectly due to renovation or renovation works or the demolition of old buildings.

In order to reduce this threat, it is very important to have information about the existing nests, in order to establish protection measures and inform the owners of the buildings and infrastructures and the technicians responsible for granting building licenses of the existence of species. protected in them. In this way, before the start of a rehabilitation, reform or construction work, appropriate measures can be taken to avoid damage, making it compatible with bird conservation.

Therefore, this application and the citizen science program of urban censuses will be a tool to protect the fauna species that inhabit the buildings. Census data will be freely accessible to public administrations and, where appropriate, to owners and operators involved in the construction or renovation processes of buildings