1 of 24

HORNBILL CENSUS

PERIYAR TIGER

RESERVE

Premchand Reghuvaran, Ahmed Omar,

M Ramesh Babu, Sri. Patil Suyog Subhash Rao IFS,

Shri P.J Suhyb, P.O Nameer

​

2 of 24

Study Area

The study area, the Periyar Tiger Reserve is subdivided into 29 camps - selected considering the various habitats, altitudes, terrains as well as the administrative units within the PTR.

3 of 24

Objective

How many Hornbills are there in Periyar Tiger Reserve?

​

​

4 of 24

Equipments used

Compass

Range finder device

5 of 24

6 of 24

7 of 24

8 of 24

9 of 24

10 of 24

2km transect

11 of 24

2km transect

12 of 24

2km transect

30m

40m

25m

35m

30m

20m

13 of 24

14 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

15 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

16 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

17 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

18 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

19 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

20 of 24

2km transect

92°

141°

​

40m

30m

Distance to the bird : 40m

Angle of Transect (AT) : 92°

Angle of Bird (AB) : 141°

40m

25m

20m

35m

30m

Angle of detection : AB-AT = 49°

Perpendicular distance : 30m

49°

30m

21 of 24

Mean Density estimates for two

Hornbill species of Periyar Tiger Reserve

Great Hornbill : 1-3

​

Malabar Grey Hornbill : 2-5

22 of 24

Hornbill density across Protected Area(PA)

Great Hornbill : 1-3 (PTR)

Area (PA)

Density (per sq.km)

Namdapha Tiger Res.

4

Pakke Tiger Reserve

3.8

Anamalai TR

1.5-4.4

Parambikulam TR

1.5-4.4

Vazhachal-Sholayar

0-4

Malabar Grey Hornbill : 2-5 (PTR)

Area (PA)

Density (per sq.km)

Anamalai TR

17.5

Anshi–Dandeli–Goa

9.4

Nelliampathy RF

38.9

Parambikulam TR

32.3

Valparai (rainforest and plantations)

11.7

Vazhachal RF

33.9

*Source : BirdLife International & Birds Of The World

23 of 24

THANK OU!

Ahmed Omar Haroon

KBM Meet, KAU Thrissur

09-06-2024

24 of 24

Open for Discussion