the song of the birds is different in the countryside and in the city. In the urban jungle, the birds emit sounds at a higher frequency, something that allows his singing is heard better and that it is more easily crossing the walls of structures such as buildings.
Torben Dabelsteen, biologist at the University of Copenhagen (Denmark), found in a new inquiry wherein birds sing at a higher frequency for two reasons: to penetrate the sound of traffic, machines and people, and also to pass through the architecture that presents the city.
″Las people who live in cities can expect forward the joyful song of birds in the spring, and although an adverse effect of the most powerful singing of urban birds is that they use higher tones, the human ear can not notice the diferencia″, says Dabelsteen, whose findings were published in the journal PLoS One.
Adaptation to singing
Experts explain that I was known in advance that the high frequency of the singing of birds in the city allows to pass through the noises of the place, but were proposed to find out whether the structure of the city also influences this change in singing.
To that end they recorded the songs of birds and then analysed how much distance traveled in the city with no noises. ″Encontramos higher be the frequency of urban birds singing more transmitting sound throughout the city when there is no traffic noise. This shows that the physical structure of the cities has a key role in the raising of the frecuencias″, considered Dabelsteen.
The researchers explain that variations in the city; as the streets, open spaces and houses; they distort the sound in various ways. That is why the birds that live in these places can see each other easily but should try to reduce the echo generated by urban architecture in order to communicate.
″La urban architecture is a crucial element in as they sing the aves″, emphasizes Dabelsteen.
More information about health and science by visiting the www.neomundo.com.ar site – simply click with your mouse above on the logo of NEOMUNDO
