Bird visit to Ficus benjamina in two urbanization gradients in the tropics

Fig trees area believed to be important bird habitat in the tropics, including in urban areas. The research objective was to reveal the bird species that visited Ficus benjamina in the low and high urbanization gradients in the tropics. Data were obtained in IPB University Darmaga Campus (low urbanization) and Sentul City (high urbanization) in Bogor (West Java, Indonesia), through direct observations of four trees per site in the morning, midday, late afternoon, and night, totalling 276 observation hours. Total of 29 bird species visited F. benjamina trees (26 species in low urbanization, 12 species in high), mainly insectivores, nectarivores, and frugivores birds. Nine species were common in both sites, i.e., Spotted Dove, Plaintive Cuckoo, Fulvous-breasted Woodpecker, Small Minivet, Common Iora, Sooty-headed Bulbul, Yellow-vented Bulbul, Common Tailorbird, Scarlet-headed Flowerpecker, and Olive-backed Sunbirds. Nocturnal birds (Collared Scops Owl, Large-tailed Nightjar) were present in low urbanization, but absent in high urbanization site, so did kingfishers (White-throated Kingfisher, Collared Kingfisher) and some other urbanization-prone species. The high urbanization site was characterized by the presence of Eurasian Tree Sparrow at the fig tree. This study showed that F. benjamina has an important role for diurnal and nocturnal birds, even in the high urbanization site.