Females have the same cycle of hearing as women

When examining the peripheral auditory system of birds, American zoologists found the hearing loss of female finches varies seasonally , while in the sparrow there is no such phenomenon.

By precise experiments, bird experts concluded: Step into the summer the hearing of female finches changes: they distinguish very poorly the sounds of sounds, but compensate for the sense of fineness. More subtle frequencies of sound. But by the fall, this change in the female finches naturally disappeared. The sound receptor of the sparrow and the female is now exactly the same.

When observing the meaning of their sounds - in other words their 'language' - they noticed in the birds' cry, the order of the sounds was mainly to show the announcement to each other about feeding, and frequency, timbre . to express affection between them.

According to ethnologists, the reason that female finches change the sensitivity of seasonal hearing is to adapt to their lives. Summer is synonymous with "love" season, breeding season. The female needs to have sensitive ears to catch the sound signal of the partner, which is the urge to flirt with the sparrow. They concentrate on listening and choose a suitable 'guy' to build their home. In the fall, winter, the chicks have hatched, need to find food to feed their children, teach them how to fly, the sensitive part to receive information about the feeding of the female finches is restored like the old .

Interestingly, the change in sound reception is also available in people. For example, women in different stages of the menstrual cycle of hearing also vary. They are often more absent-minded, hearing worse. They often ask questions from people around and easily forget the advice. That phenomenon can be justified by changes in hearing over time: at what stage they are in the menstrual cycle.