Editing Bird collision count (events) (section)

== Signal Definition ==
The bird collision count (events) Damage Signal quantifies the total number of discrete collision incidents involving birds and anthropogenic structures within a specified geographic and temporal domain. Each event represents a documented instance where a bird has collided with a physical obstacle, resulting in injury or mortality. The canonical unit of measurement is a simple count of events, aggregated over defined spatial units and time intervals. This signal captures the receptor impact within the biosphere domain attributable to chemical and physical stressors associated with human infrastructure.