Table 1. Percentage of various perch types used by insectivorous birds in the study area

Bird species	Electric power line	Trees	Shrub	Ground
White-breasted Kingfisher (1194) Small Bee-eater (1052) Indian Roller (700) Common Myna (1277) Black Drongo (1186)	43 43 52 5 51	48 18 43 11 36	7 39 3 4 10	2 - 2 79 3

Values in the parenthesis are number of observations

Table 2. Percentage use of various perching and foraging heights by insectivorous birds

Bird species	Perching height (m)
	0-3	3-6	6-9	9-12	H′
White-breasted Kingfisher Small Bee-eater Indian Roller Common Myna Black Drongo	12 22 10 90 19	24 33 15 5 23	61 44 73 5 56	3 1 3 - 3	1.00 1.11 0.85 0.39 1.08
	Foraging height (m)
White-breasted Kingfisher Small Bee-eater Indian Roller Common Myna Black Drongo	88 33 80 97 69	10 37 16 2 20	2 22 4 1 8	- 8 - - 3	0.42 1.27 0.60 0.15 0.89

Table 3. Percentage use of various foraging substrates by insectivorous birds

Bird species	Air	Plants*	Ground
White-breasted Kingfisher Small Bee-eater Indian Roller Common Myna Black Drongo	9 68 15 1 26	64 32 66 13 63	27 - 19 86 11

*considered as herb or shrub or trees.

Table 4. Percentage use of various foraging methods by insectivorous birds

Bird species	Aerial feeding	Gleaning	Ground feeding
White-breasted Kingfisher Small Bee-eater Indian Roller Common Myna Black Drongo	9 68 15 1 26	64 32 66 13 63	27 - 19 86 11

Table 5. Niche overlaps values among the insectivorous birds in the study area

Bird species	Perch types	Perching heights	Foraging heights	Foraging substrates	Foraging Methods
Kingfisher x Bee-eater Kingfisher x Roller Kingfisher x Myna Kingfisher x Drongo Bee-eater x Roller Bee-eater x Myna Bee-eater x Drongo Roller x Myna Roller x Drongo Myna x Drongo	0.75 0.98 0.17 0.97 0.76 0.11 0.84 0.16 0.99 0.18	0.94 0.98 0.25 0.99 0.88 0.44 0.96 0.19 0.96 0.36	0.68 0.99 0.99 0.98 0.74 0.62 0.81 0.98 0.99 0.96	0.50 0.98 0.51 0.94 0.59 0.07 0.72 0.41 0.98 0.29	0.50 0.98 0.51 0.94 0.59 0.07 0.72 0.41 0.98 0.29

Highest niche overlap values are underlined