During 2003-2006, forty-three nests of Narcissus Flycatcher (
Ficedula narcissina elisae
) were found in Xiaolongmen Forestry, Beijing. Among the 43 nests, nine nests were found in nest boxes while other 34 nests were constructed both on open sites (29.4%) and in holes (70.6%). The 10 open nests were weaved between several upward twigs, and the 24 hole-nests were built in hollows, trunks or on stumps. Open nests had larger height above ground than the hole-nests. Narcissus Flycatchers only used the nest boxes with big entrances. The majority of nest trees were
Betula dahurica
. Vegetation characteristics of nest sites were measured in the samples around the nests with a radius of 6 m. According to the result of Principle Component Analysis on the variables describing the nest-site characteristics, the forest with big trees and abundant stumps provided appropriate nest sites for Narcissus Flycatchers. Of the 43 nests we found, 22 (51.2%) were successful, those that failed were destroyed by predators.
