1. Wildlife Institute of India PO Box #18, Chandrabani Dehradun 248001 India
2. Avian Diversity and Bioacoustics Lab Department of Zoology and Environmental Science Gurukula Kangri Vishwavidyalaya Haridwar Uttarakhand 249404 India
3. Animal Ecology Department of Ecology and Genetics Evolutionary Biology Centre Uppsala University Norbyvägen 18D 752 36 Uppsala Sweden
4. Swedish Species Information Centre Swedish University of Agricultural Sciences Box 7007 SE‐750 07 Uppsala Sweden
5. Uttarakhand Forest Department 85, Rajpur Road Dehradun 248001 India
6. Cornell Lab of Ornithology Cornell University Ithaca NY 14850 USA
7. Department of Ecology and Evolution University of Chicago Chicago IL 60637 USA