Abstract:The Camphor Tree (Cinnamomum camphora) is an evergreen broad-leaved tree species with abundant fruits and a long fruit period, which is widely distributed in subtropical areas. With Safari l0 × 26 zoom binoculars, the focus scanning method was adopted to observe the bird behavior of visiting Camphor trees in Nanjing Zhongshan Botanical Garden, China, from November 2018 to February 2019. The information of bird species, foraging substrates, foraging frequency, foraging time, foraging amount and foraging methods were recorded. For the 48 effective days of observation, a total of 1 021 foraging behavior of 27 species of birds were recorded with 2 foraging substrates (ground and tree) and 3 foraging methods (swallow the fruits, pecking at pulp and seed predation) (Table 1). One-Sample T-test showed that there were significant differences in foraging frequency among different bird species (t = 3.096, df = 26, P < 0.01). There were significant differences in the average number of visits, average foraging frequency, average foraging time and foraging amount between birds in different months (P < 0.001, Fig. 1). Light-vented Bulbul (Pycnonotus sinensis), Chinese Blackbird (Turdus mendarinus) and Azure-winged Magpie (Cyanopica cyanus) are the three types of birds with the most visit and foraging amount (Fig. 2). One-way ANOVA showed that there were significant differences in foraging amount among the three species (F3, 598 = 25.219, P < 0.001). In terms of time, more species and quantity of birds visited in November in comparison with those in other months, and the foraging frequency, time and amount on the fruits in January were the largest. The morphological characteristics (body weight, body length and bill length) of birds were positively correlated with the foraging amount of the fruits (Fig. 4). Effects of body weight and body length on the foraging amount were more significant than that of the bill length, but bill length could affect the feeding methods significantly (Fig. 3). Many seeds with clean surface and no pulp wrapped were found under the trees acting as roosting site of birds. Many Camphor seedlings of can be seen in plantations and natural regeneration woodlands, which indicates that birds may play a role in seed dispersal of Camphor trees.