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Table 1 Overall sleep time in the White-crowned sparrow was reduced in migratory periods and in periods of longer daylight

From: Seasonal influences on sleep and executive function in the migratory White-crowned Sparrow (Zonotrichia leucophrys gambelii)

  Percent
Season Wake Drowsy SWS REM
Winter 48.3% 14.9% 36.6% 0.168%
  ± 2.2% ± 0.6% ± 2.2% 0.020%
Spring 66.8% 15.3% 17.8% 0.108%
  ± 4.5% ± 5.6% ± 3.3% 0.029%
Summer 73.1% 12.3% 14.6% 0.068%
  ± 4.4% ± 6.0% ± 2.3% 0.035%
Fall 67.1% 14.0% 18.8% 0.147%
  ± 5.6% ± 0.5% ± 5.1% 0.047%
  Hours
Season Wake Drowsy Sleep Daylight
Winter 11.6 3.58 8.8 9
  ± 0.54 ± 0.15 ± 0.53  
Spring 16.02 3.67 4.28 13
  ± 1.2 ± 1.07 ± 0.8  
Summer 17.53 2.96 3.51 21
  ± 1.05 ± 1.44 ± 0.57  
Fall 16.13 3.36 4.56 14.29
  ± 1.21 ± 0.13 ± 1.38 ± 1.02
  1. (Top) Average percentage (mean ± SEM) of 24-hour recording time spent in each behavioral state across season. (Bottom) Number of hours per 24-hour recording time that birds spent in each vigilance state and the corresponding length of daylight. REM has been added to SWS and labeled as "sleep", since REM sleep amounts were minimal throughout. (winter n = 4, spring n = 5, summer n = 4, fall n = 3).