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Table 10 Cloud Cover/Visibility in studies relevant to aggregation/mortality

From: Effects of artificial light on bird movement and distribution: a systematic map

Cloud cover/visibility Study count
Only clear days/nights 6
Only cloudy days/night 29
Varied—descriptive 31
Varied—events only 17
Varied—events only and descriptive 2
Varied—systematic 25
UA 107
  1. Cloud Cover/Visibility was coded as Variedsystematic if it was recorded at regular intervals throughout the study period. It was coded as Variedevents only if it was only recorded during aggregation/mortality events and Varieddescriptive if authors described in general terms the conditions under which aggregation/mortality were most likely to occur