Dragonflies (Sympetrum sp.) resting on a barbed wire fence. The dragonflies are in the obelisk position,with their wings swept forward and their abdomens raised. Dragonflies assume this position to cool off on a hot day as it minimises the surface area that is exposed to the Sun | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Brackenbury, Dr. John |
Taille de l’image : | 3508 px × 2697 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |