{"fact":"Hooded crows have been observed displaying rare and aggressive social behavior, where non-breeding males attempt forced copulations with nesting females.","context":"Video tapings showed that on two separate occasions, intruders attacked the female at one of the nests... attempted to gain access to the female in order to copulate with her. The spatio-temporal occurrence of these attacks suggests that the observed behaviour is intraspecific sexual aggression.","source":"Piotr Zduniak; Jakub Z Kosicki; Reuven Yosef, Sexual aggression by intruders in hooded crow Corvus cornix, 10.1007/s10211-015-0222-z","index":665}