Birds also experience "jet lag". It complicates their navigation

A study from Oxford University reveals that northern fulmars experience a form of jet lag when crossing time zones during their foraging flights. Researchers tracked over a thousand birds, finding that their biological clocks lagged behind local time by up to an hour, affecting their navigation. The birds rely on the sun for orientation, and discrepancies arose when they crossed longitudinal lines. Surprisingly, even familiar visual cues did not correct their orientation errors, highlighting the sun's critical role. While adult birds faced minor deviations, younger ones could experience significant navigational errors, potentially leading to hundreds of kilometers off course.