Bald-faced hornet is constructed too close to human habitation. They vigorously defend the nest, with workers stinging repeatedly, as is common among social bees and wasps. However, the baldfaced hornet has a unique defense in that it can squirt or spray venom from the stinger into the eyes of vertebrate nest intruders. The venom causes immediate watering of the eyes and temporary blindness. The life cycle of a colony can be divided into the founding stage, the ergonomic stage and the reproductive stage. Colonies show annual cycling. New nests are generally founded during spring and early summer by a single queen, though
Vanzolini's bald-faced saki his assistant Miguel Moreira. The mammals in this expedition were collected alive and prepared as museum specimens, as described by Cory T. Carvalho, the mammalogist working at the Goeldi museum at the time After 61 years, in 2017, one individual was collected after being hunted for bush meat in an extractive community in the state of Acre, Brazil. After not being seen alive for more than 60 years, as F. Novaes and M. Moreira collected specimens in 1956, an individual was photographed in the wild in August 2017. Vanzolini's bald-faced saki Vanzolini's bald-faced saki ("Pithecia vanzolinii") is a species of