How to delete bunch of Photos on your iPhone

To those who admire taking shot of almost everything they come across, ranging from the adorable bird laying on its nest to the puppy standing by the door; and you begin snapping those photos as the beauty of those things captivate you and adjusting the focus and angle as you go not minding your device's memory. It could be a task for you to getting them off your phone's when you're no more interested in them.