The placement and the size and shape of nests of Ring Ouzel (Turdus torquatus) reflect the environmental conditions at different altitude
Abstract
The placement and size and shape of the nests of the Ring Ouzel vary locally in response to variation in environmental conditions such as altitude. Nests at the higher elevations were built on thinner and younger spruce trees than nests located at lower altitudes. Nest at low elevations tended to be smaller but more spacious than their counterparts. In some cases, they tended to be wide with short nest cups. These differences in nests suggest that Ring Ouzels tailor nest structure to the microclimate at the nest site.
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