CHANDRAN & VISHNUDAS: Bird flocks in coffee plantation 97 A comparative study of mixed-species bird flocks in shaded coffee plantation and natural forest in Wayanad, Kerala Karthika Chandran & Vishnudas C. K. Karthika C. & Vishnudas C. K. 2018. A comparative study of mixed-species bird flocks in shaded coffee plantation and natural forest in Wayanad, Kerala. Indian BIRDS. 14 (4): 97–102. Karthika Chandran, Centre for Wildlife Studies, Kerala Veterinary and Animal Sciences University, Pookode, Wayanad, Kerala, India. E-mail:
[email protected] Vishnudas C. K., Hume Centre for Ecology and Wildlife Biology, #161, 2nd floor, Valappil Complex, Gudalai Road, Kalpetta, Wayanad, Kerala, India. E-mail:
[email protected] [Corresponding author] Manuscript received on 01 November 2017. Abstract Mixed-species flocks, in two different habitats (coffee plantation and natural forest) in Wayanad District, were studied in order to compare the species composition and organisation of flocks in both habitats. Flocks were surveyed along three 500 m trails at the study sites and species, species numbers, number of individuals, and the foraging height and foraging substrate of species within the flocks were recorded. A total of 38 flocks were observed in the coffee plantation and 25 flocks in the natural forest. The results suggested no significant differences in the abundance of mixed-species flocks, mean species richness, or mean number of individuals per flock. However, there was a change in the foraging levels of certain species from mid-canopy/ upper canopy in coffee plantation to lower canopy/understorey levels in forest. The foraging height of the flock members differed significantly between both habitats.