Satellite Telemetry Insights into the Winter Habitat Use and Movement Ecology of Common and Demoiselle Cranes

Author:

Ram Mohan1ORCID,Gadhavi Devesh2,Sahu Aradhana3,Srivastava Nityanand4,Rather Tahir Ali2ORCID,Jhala Lahar1,Kapadi Priyank1,Vala Karshan1,Zala Yashpal1,Modi Vidhi2,Jhala Dushyantsinh2,Patel Akshita2,Baraiya Sneha1,Devaliya Dhaval1

Affiliation:

1. Wildlife Division, Sasan-Gir, Junagadh 362135, Gujarat, India

2. The Corbett Foundation, P.O. Tera, Taluka Abdasa, Kutch 370660, Gujarat, India

3. Wildlife Circle, Junagadh 362001, Gujarat, India

4. Chief Wildlife Warden, Gandhinagar 382010, Gujarat, India

Abstract

Using satellite telemetry, it is possible to track long-distance migrant birds with high accuracy and greater spatial coverage. However, prior to 2014, less than 1% of bird species in India had been monitored using this technology. Between January and February 2022, we deployed leg-mounted solar GPS/GSM satellite transmitters to Common Cranes and Demoiselle Cranes (two each) to study home ranges, movement, migration patterns, and habitat use. We used 95% kernels to define the total home range size and 50% kernels to delimit the core areas. The winter habitat use was assessed using Generalized Linear Models (GLM). The average home range of Common Cranes and Demoiselle Cranes was estimated as 161.22 ± 172.08 km2 and 971.40 ± 1023.57 km2, respectively. During migration, Common Crane-1 and Common Crane-2 traveled an average of 471.19 ± 442.42 and 176.97 ± 24.82 km per day, and Demoiselle Crane-1 and Demoiselle Crane-2 covered an average daily distance of 168.10 ± 203.77 and 192.97 ± 250.72 km, respectively. Water bodies and croplands were the most important habitat variables influencing crane presence positively. In recent years, the share of food grain crops within the study area has declined from 43% in 1994–1995 to 36% in 2014–2015, while the share of cotton crops has doubled from 11% to 20%, indicating a probable cause of concern in the near future.

Funder

Wildlife Division, Sasan-Gir, Gujarat Forest Department

Publisher

MDPI AG

Subject

Process Chemistry and Technology,Economic Geology,Fuel Technology

Reference63 articles.

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