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Flight activity of native Saudi (Apis mellifera jemenitica Ruttner) and carniolan (Apis mellifera carnica Pollmann) colonies and their F1 hybrid during Early February to Late May (1992/1993).
| Observation | Time of Activity for Colonies | ||
|---|---|---|---|
| Apis mellifera jemenitica | Apis mellifera carnica | first hybrid | |
| Time of 1st worker flight | 5:55 | 5:56 | 5:53 |
| Time of last worker return | 18:09 | 17:58 | 18:13 |
| Time of sunrise | 6:02 | Time of sunset | 18:03 |
| Sunrise temperature | 14.5°C | Sunset temperature | 23.5°C |
