4/24/2024 0 Comments Are society finches loudThe researchers, however, do not exclude long-term effects on the offspring. However, once the chicks from noisy condition left the nest and could feed on their own, they managed to catch up with the chicks from quiet nests. ![]() Credit: Sue Anne ZollingerĬhicks whose parents were exposed to traffic noise were smaller than chicks from parents that bred in quiet aviaries. Only later in life they manage to catch up. In addition, they took measures of the immune function, and reproductive success, as well as the growth rates of the chicks.Ĭhicks of zebra finches that grow up in nests exposed to traffic noise are smaller than chicks from quiet aviaries. ![]() The researchers recorded the level of stress hormones before, during and after the breeding period, respectively. Sometime after the end of the first breeding period the noise conditions changed for both groups and the same pairs bred again. Just as in a real city, the traffic noise varied throughout the day, with the sounds of heavier traffic during the day and lighter traffic during the night. The noise groups were exposed to traffic noise recorded at several busy intersections in and around Munich during the whole breeding period. Two groups of birds bred in both noise and no-noise conditions. ![]() Now, a research team at the Max Planck Institute for Ornithology in Seewiesen headed by Henrik Brumm has studied the effect of noise on stress hormone levels, health and reproductive success in breeding zebra finches. To date, studies on how birds are impacted by traffic noise have focused on the effects on the singing behaviour of birds, but less is known about how noise affects the heath of exposed animals.
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