The supplied line graph delineates the Bird counts of a variety of birds that could be seen at Bharatpur Bird Sanctuary, during a 13-year period, spanning from 2001 to 2014, comparing Kingfisher, Black Beak Pelican and Flamingo.
Overall, all three bird species saw an increase in their populations over the thirteen-year period, despite some moderate fluctuations. The Flamingo experienced the most dramatic growth, ending the period as the most frequently sighted bird, while the Kingfisher and Black Beak Pelican followed a similar, albeit less rapid, upward trajectory.
Turning first to the number of Flamingos sighted at Bharatpur Bird Sanctuary which numbered 3,000 in 2001, it recorded a gentle increase to almost 5,000 in 2003, from where it grew rapidly, reaching around 9,000 by the year 2006. It then saw a marginal decrease to approximately 8,500 in 2008. Thereafter, the number grew significantly, standing at around 12,000 by the end of the period. On the other hand, Black Bean Pelican count started at around 1,800. It then rose dramatically, reaching as high as 7,000 in 2005.This was followed by a slight decrease to 6,000 in 2008, from where it underwent a rebound, numbering 7,000 in 2014.
As of 2001, the number of Kingfisher numbered around 1,000, being the least sighted bird at Bharatpur Bird Sanctuary. This figure grew slightly in the following year, which was then followed by a rapid increase in the subsequent years, standing at 4,000 in 2008. Thereafter, it recorded a slight growth to 4,500 by the end of the period.