Smashing(BE459)Runner up: BehaviourAn adult wild bearded capuchin monkey (Sapajus libidinosus) uses a stone tool to crack a very resistant palm nut in Fazenda Boa Vista (Piauì, Brazil). These monkeys habitually crack open very resistant palm nuts on hard surfaces using stones as percussive tools. This behaviour is considered one of the most complex forms of tool use by nonhuman species seen in nature. The alpha male, weighing 4.2 kg, picked up a big stone (3.5 kg) and lifted that above his head to crack a piassava nut. Capuchinsâ actions are very fast so it is hard to capture the decisive moment. In a matter of milliseconds I shot and took the photo that I wanted: the representation of capuchin monkeys‘ strength and beauty.Digital adjustment: brightness and contrast, sharpening, exposure changes. Model: Canon EOS 600D. Lens: EF-S18-135mm f/3.5-5.6 IS. Exposure: 1/640 sec; f/3,5; ISO 200. Focal length: 18,0 mmPhoto taken in Fazenda Boa Vista (Gilbués, Piauì, Brazil)Luca Antonio Marino, Italy