Due to the rapid urbanisation the habitats of many animals and birds have come under threat of being decimated. Human beings are interfering with the way the nature works. Deforestation is on the rise. At many places in the world, the forests are being converted into agricultural land.
Another reason is the harmful chemicals present in the medicines. This is nowhere more evident as in the drastic reduction in the population of many Vultures and eagles. Some Vultures like Griffons and Cinereous Vultures and eagles like Steppe eagles at one state came almost to the stage of becoming extinct. The reason that is cited is the presence of declofenac in the flesh of carcasses which these vultures feed on. This medicine was given to the animals for disease.
But this medicine has been banned now. Also the efforts are on to breed the Vultures in captivity and releasing the grown up birds back into their habitat. Some Birds which are on the IUCN red list are spotted by me in our area. It gives hope that the dismal situation will be reversed.