Suhel Quader

Scientist, Education and Public Engagement

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I have two major interests. The first is in Evolutionary Ecology, which is a fancy way of saying that I'm interested in why animals and plants do what they do. That is, how does what they do make sense? For example, why do crows chase away koels from their nests; or why do mosquito larvae move less when they smell danger?

My other main interest is in Citizen Science, or what is often now called Public Participation in Scientific Research. The idea here is that the world is large and complex and is changing rapidly; and to better understand the world we need to work together, all of us, regardless of our background or formal training. Our Citizen Science programmes are run in collaboration with the National Centre for Biological Sciences, as well as other partners. The two main projects we run are MigrantWatch, which looks at the timing of migration of birds; and SeasonWatch, in which we investigate seasonal patterns in leaf-flush, flowering and fruiting of trees. Everyone is welcome to participate!


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Bird Count India

Birdwatchers pooling information for research and conservation


Early Bird

Materials and curriculum for introducing children to birds

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Monitoring bird migration through public participation

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Nature Activities

Nature Calls activities for children

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Join us in studying the seasonality of trees!


  • Journal Article
    In press
    Plant-disperser mutualisms in a semi-arid habitat invaded by Lantana camara L.
    Plant Ecology
  • Journal Article
    In press
    Playing it safe? Behavioural responses of mosquito larvae encountering a fish predator
    Karthikeyan Chandrasegaran, Avehi Singh, Moumita Laha, Suhel Quader
    Ethology, Ecology & Evolution

  • Popular Article
    The fall of a squirrel
    The Hindu in School, 16 November
  • Book
    Birds of peninsular India: a pocket guide to 135 familiar birds

    Pocket guide

  • Book
    What's that bird? Common birds of India

    Flashcards of birds for children

  • Journal Article
    Demographic superiority with increased logging in tropical understorey birds
    Umesh Srinivasan, James E Hines, Suhel Quader
    Journal of Applied Ecology, 52 (5): 1374-1380
  • Journal Article
    Perceptions of priority issues in the conservation of biodiversity and ecosystems in India
    Varma, V, Ratnam, J, and many others, including, from NCF, Anand M Osuri, M D Madhusudan, Kavita Isvaran, Jagdish Krishnaswamy, Raman Kumar, Nisha Owen, Suhel Quader
    Biological Conservation, 187: 201-211

    PDF, 886 KB

    Online link

    We report on the results of a country-wide survey of people’s perceptions of issues relating to the con- servation of biodiversity and ecosystems in India. Our survey, mainly conducted online, yielded 572 respondents, mostly among educated, urban and sub-urban citizens interested in ecological and environ- mental issues. 3160 ‘‘raw’’ questions generated by the survey were iteratively processed by a group of ecologists, environmental and conservation scientists to produce the primary result of this study: a sum- marized list of 152 priority questions for the conservation of India’s biodiversity and ecosystems, which range across 17 broad thematic classes. Of these, three thematic classes—‘‘Policy and Governance’’, ‘‘Biodiversity and Endangered Species’’ and ‘‘Protection and Conservation’’—accounted for the largest number of questions. A comparative analysis of the results of this study with those from similar studies in other regions brought out interesting regional differences in the thematic classes of questions that were emphasized and suggest that local context plays a large role in determining emergent themes. We believe that the ready list of priority issues generated by this study can be a useful guiding framework for conservation practitioners, researchers, citizens, policy makers and funders to focus their resources and efforts in India’s conservation research, action and funding landscape.

  • Journal Article
    Genetic diversity and population structure of Lantana camara in India indicates multiple introductions and gene flow.
    Avik Ray, Suhel Quader
    Plant Biology. 16(3): 651-658.

    PDF, 278 KB

    Permanent link:

    Lantana camara is a highly invasive plant, which has spread over 60 countries and island groups of Asia, Africa and Australia. In India, it was introduced in the early nineteenth century, since when it has expanded and gradually established itself in almost every available ecosystem. We investigated the genetic diversity and population structure of this plant in India in order to understand its introduction, subsequent range expansion and gene flow. A total of 179 individuals were sequenced at three chloroplast loci and 218 individuals were genotyped for six nuclear microsatellites. Both chloroplasts (nine haplotypes) and microsatellites (83 alleles) showed high genetic diversity. Besides, each type of marker confirmed the presence of private polymorphism. We uncovered low to medium population structure in both markers, and found a faint signal of isolation by distance with microsatellites. Bayesian clustering analyses revealed multiple divergent genetic clusters. Taken together, these findings (i.e. high genetic diversity with private alleles and multiple genetic clusters) suggest that Lantana was introduced multiple times and gradually underwent spatial expansion with recurrent gene flow.

  • Dataset
    Data from: Influence of gaze and directness of approach on the escape responses of the Indian rock lizard, Psammophilus dorsalis (Gray, 1831).
    R Sreekar, Suhel Quader
    Dryad Digital Repository. doi:10.5061/dryad.1h551

    Contains both raw data and analysis scripts. Permanent link to the dataset and scripts on Dryad:

  • Journal Article
    Influence of gaze and directness of approach on the escape responses of the Indian Rock Lizard, Psammophilus dorsalis (Gray, 1831).
    R Sreekar, Suhel Quader
    Journal of Biosciences. 38(5): 829–833.

    PDF, 145 KB

    Permanent link

    Free download from J. Biosciences webpage:

    Animals often evaluate the degree of risk posed by a predator and respond accordingly. Since many predators orient their eyes towards prey while attacking, predator gaze and directness of approach could serve as conspicuous indicators of risk to prey. The ability to perceive these cues and discriminate between high and low predation risk should benefit prey species through both higher survival and decreased energy expenditure. We experimentally examined whether Indian rock lizards (Psammophilus dorsalis) can perceive these two indicators of predation risk by measuring the variation in their fleeing behaviour in response to type of gaze and approach by a human predator. Overall, we found that the gaze and approach of the predator influenced flight initiation distance, which also varied with attributes of the prey (i.e. size/sex and tail-raise behaviour). Flight initiation distance (FID) was 43% longer during direct approaches with direct gaze compared with tangential approaches with averted gaze. In further, exploratory, analyses, we found that FID was 23% shorter for adult male lizards than for female or young male (FYM) lizards. In addition, FYM lizards that showed a tail-raise display during approach had a 71% longer FID than those that did not. Our results suggest that multiple factors influence the decision to flee in animals. Further studies are needed to test the generality of these factors and to investigate the proximate mechanisms underlying flight decisions.

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