Stock Photo - Emerging Common Clubtail, Gomphus vulgatissimus clings to marsh grass after emerging eyes are still grey and not fully formed Before first flight Wings not yet dried Eyes will change to olive or brown color as mature Males will turn green as they mature Females remain yellow Dragonflies are apparently blind when they emerge and are not fully sighted until after first flight They climb hesitantly by striking out with legs to find grasp and make frequent falls when they miss the next grasp Wing drying may take over twenty-four hours, dependent on weather conditions The clubtails emerge en masse from fast-moving clean streams into heavy protective undergrowth such as nettles and vanish into tree canopy after flight Srbsko, Czech Republic Flight May to July Emerge during damp, wet cold weather