Animals Expected to Alter Behavior During Aug. 12 Total Solar Eclipse

Animals across the Iberian Peninsula are expected to modify their behavior during the total solar eclipse on Aug. 12, 2026 ^[1].

These reactions matter because they reveal how wildlife relies on light cycles to regulate essential biological functions. The sudden shift in illumination can trigger confusion or instinctual responses that deviate from normal daily routines.

Biologist Borja Nebot said the animals perceive the eclipse as a sudden change in light that alters their behavior patterns ^[2]. This disruption affects a wide range of species, including birds, mammals, and insects. Some animals may experience a decrease in activity or a complete cessation of singing as the environment darkens ^[2].

The path of totality will cross the Iberian Peninsula from west to east, covering much of the northern half and the Balearic Islands ^[3]. During this event, the phase of totality will last approximately one minute, with some areas of higher coverage experiencing slightly more than one minute of total darkness ^[3].

While some historical accounts from the 16th century described birds falling from the sky and stopping their songs ^[4], modern scientific perspectives suggest the reactions are more nuanced. Nebot said scientific studies indicate responses are far more complex than animals simply believing that night has fallen ^[2].

The sudden darkness alters the light cycles that regulate circadian rhythms ^[2]. These rhythms govern when animals sleep, eat, and communicate. When the sun is obscured, the biological clock is momentarily deceived, leading to reactions that vary significantly depending on the species ^[2].