Nestrophobia is an intense fear of nests, which can include the nests of birds and other animals. This phobia may stem from a fear of the creatures that inhabit the nests or a general anxiety about nature and the outdoors. Individuals with nestrophobia may experience symptoms such as panic attacks, anxiety, or avoidance behavior when encountering nests. Treatment often involves therapy, such as cognitive-behavioral therapy, to help manage and reduce the fear.