Analysis of information sources in references of the Wikipedia article "Siberian crane" in English language version.
Siberian Crane Leucogeranus leucogeranus (Fig. 3.33) used to be the most charismatic and rare bird at Ghana or the Keoladeo National Park of Bharatpur. At one time, hundreds of "Sibes" used to winter in the Ghana Bird Sanctuary. Like white ghosts in the mist, they were lured by other north Indian wetlands from far and near. The "Sibes" used to visit Ghana from their breeding grounds in Siberia in search of food owing to the nonavailability of summer supplies due to extreme cold. No Siberian Crane was sighted in Bharatpur since 2003.