Bluebottle fly temperatures

On the same morning that I'd been shooting been ice and frozen soap bubbles, I put some drops of sugar mixture on a camellia bush to see if there were any bugs about. Around 11.30am some flies appeared and I measured the temperatures using an infra red thermo- sensor and a shade thermometer.
Shade ground temperature -3.7'C
Shade air temperature + 3.2.C
Camellia leaf in sun + 12.C
Bluebottle fly on leaf in sun + 16.5.C
So the bluebottle flies were surprisingly warm
Brian V.
Shade ground temperature -3.7'C
Shade air temperature + 3.2.C
Camellia leaf in sun + 12.C
Bluebottle fly on leaf in sun + 16.5.C
So the bluebottle flies were surprisingly warm
Brian V.

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Comments
Lovely detail.
This compares with honeybees, which will forage down to about 13C and collect water down to about 10C. Theses are air temperatures, not sunny spots. The thresholds will vary with there needs and activity on preceding days.
Harold
Brian V.
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Brian v.
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Does look very similar- even on a camellia leaf - lovely shot.
Brian V.
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Thanks Phil
Just wondered how warm insects get in the sun.
Brian V.
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