Table 2 Conditions when Japanese macaques succeeded in catching fish and techniques used.
From: Behavior of snow monkeys hunting fish to survive winter
Site | Camera | Triggered date | Weather | Amount of precipitation (mm) | Mean of global solar radiation (MJ) | Atmospheric pressure (hPa) | Mean air temperature (℃) | Mean relative humidity (%) | Wind direction (°) | Mean wind speed (m/s) | Fishing methods* | ** | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Date | Time | ||||||||||||
St. 1 | 1-ii | 11-Feb | 11:01 | Sunny | 0 | 0.50 | 843.0 | − 1.9 | 74.5 | 245.0 | 0.6 | Right hand and mouth, 2 other individuals | Fish |
St. 1 | 1-iii | 24-Feb | 10:24 | Cloudy | 0 | 2.00 | 843.0 | − 5.8 | 41.5 | 230.0 | 3.1 | Both hands, 1 other individual | Fish-like |
St. 1 | 1-iii | 24-Feb | 11:14 | Sunny | 0 | 2.10 | 843.0 | − 5.9 | 47.0 | 240.0 | 2.8 | Both hands, alone | Fish-like |
St. 1 | 1-iii | 24-Feb | 11:21 | Sunny | 0 | 2.10 | 843.0 | − 5.9 | 42.0 | 240.0 | 2.8 | Right hand, alone | Fish |
St. 1 | 1-iii | 24-Feb | 11:33 | Sunny | 0 | 2.50 | 843.0 | − 4.7 | 42.0 | 240.0 | 2.0 | Left hand, alone | Fish-like |
St. 1 | 1-iii | 23-Feb | 13:12 | Sunny | 0 | 1.80 | 843.5 | − 5.9 | 56.5 | 225.0 | 2.9 | Both hands, alone | Fish |
St. 1 | 1-iii | 23-Feb | 13:46 | Sunny | 0 | 1.20 | 841.5 | − 6.3 | 55.5 | 225.0 | 2.6 | Both hands and mouth, 1 other individual | Fish |
St. 1 | 1-iii | 23-Feb | 14:24 | Cloudy | 0 | 1.20 | 841.5 | − 6.3 | 55.5 | 225.0 | 2.6 | Both hands and mouth, alone | Fish |
St. 1 | 1-iv | 4-Feb | 10:36 | Sunny | 0 | 1.90 | 837.0 | − 4.5 | 50.0 | 230.0 | 3.0 | Unknown, alone | Fish-like |
St. 1 | 1-v | 11-Feb | 10:09 | Sunny | 0 | 0.45 | 843.5 | − 4.0 | 79.5 | - | 0.0 | Both hands and mouth, 1 other individual | Fish |
St. 5 | 5-i | 19-Feb | 13:28 | Snowfall | 0 | 0.21 | 844.5 | − 0.4 | 70.0 | 230.0 | 1.6 | Both hands, alone | Fish-like |
St. 5 | 5-i | 19-Feb | 13:34 | Snowfall | 0 | 0.09 | 843.0 | − 1.4 | 70.0 | 225.0 | 0.8 | Both hands and mouth, 1 other individual | Fish |
St. 5 | 5-i | 19-Feb | 14:13 | Snowfall | 0 | 0.09 | 843.0 | − 1.4 | 70.0 | 225.0 | 0.8 | Unknown, 4 other individuals | Fish |
St. 5 | 5-i | 19-Feb | 15:23 | Snowfall | 0 | 0.09 | 842.5 | − 1.8 | 81.5 | 230.0 | 1.4 | Right hand, 1 individual | Fish-like |
