Posts tagged birds
It is quite possible that you know the national symbols of India. You may know that the National Animal is the Tiger, the national tree is the Banyan Tree, the national bird is the Peacock and the national flower is Lotus. You may, perhaps, also be aware that the Gangetic Dolphin was recently declared the national Aquatic Mammal of India. However, you may not be aware of the symbols of the different states of India. I wasn’t too, and the information available online was not properly referenced. So, I decided to take advantage of the wiki setup we had with the Biodiversity of India website and compiled an exhaustive, well-referenced list of various state symbols.
What can this list be used for? Well, for starters, it is an educational resource. Teachers can quiz their children on various state symbols and ask them to describe each one of them, draw their pictures and research deeper on where they are found in their state. This list can be used by amateur conservationists, to generate awareness among the common man for conservation of these species. Conservation efforts over the past several decades have shown that if we project a certain flagship species – Tiger in India, Elephant in Africa, Orangutans in Indonesia – and create a movement for their conservation, countless other species also get saved in the process. The same strategy can be used in each state in India, by creating a movement around the state symbol.
The entire list of the official state symbols of India can be accessed here: Official flora and fauna of Indian states.
First published: Biodiversity of India
The role of birds in maintaining rainforests is frequently under-appreciated. An example in this regard is the Hornbill. Hornbills are large frugivores birds which are more efficient in seed dispersal in terms of wider range of fruit/seed sizes than other small frugivores birds.
There are total fifty-four species of hornbills found in sub-Saharan Africa, India, and Southeast Asia and New Guinea of which —23 species are fond in Africa and 31 in Asia. Their contribution to the maintenance of forests has been scientifically recognized and they are regarded as “farmers of the forest”. The most extensive study on feeding behavior of hornbills by Shumpei Kitamura (1) suggests that they feed on 748 plant species from 242 genera and 79 families. In this report, author also suggests that, survival of the seeds after passing through gut of hornbill is quite good. Also, a significant number of seed species showed enhanced germination efficiency after passing through their digestive system. After feeding, hornbills usually regurgitate or defecate seeds when perched. The home range of these birds, depending on their size, can vary from 700 Hectare to 2400 Hectare with daily movements regularly extend to at least 10 km, which suggests they can be much more efficient than the other smaller frugivores in dispersing seeds at a wider range of territory. Studies by Kinnaird(2) on the distribution pattern of seeds by hornbills suggested that they help in increasing the abundance and diversity seedlings near the nesting site. A relatively long retention time of the seeds in the gut also contributes to relatively wide spread of seeds.
Unfortunately, relatively large frugivores like Hornbills are vulnerable to extinction, as most of the rain forests in Asia are under tremendous anthropogenic pressures such as hunting, and habitat loss or, degradation. Some of these hornbill species are among the rarest in the world, with only ~40 individuals left! Dwindling number of these forest farmers will have reaching effects on the maintenance of the rainforests itself. So, the close association between hornbill population for maintenance of rainforests as well as conservation of rainforests to prevent extinction of Hornbills has to be scientifically examined before implementing any developmental projects in such eco sensitive zones.
1) Frugivory and seed dispersal by hornbills (Bucerotidae) in tropical forests. (2011) Shumpei Kitamura, Acta Oecologica, 37, (6), 531–541
2) Evidence for effective seed dispersal by the Sulawesi red-knobbed hornbill, Aceros cassidix (1998), Kinnaird M.F., Biotropica, 30 (50–55)