- A rare sighting of a Mandarin duck (Aix galericulata) was reported in the Maguri-Motapung Beel wetland near Doomdooma in Tinsukia district, Assam, in February 2021. - This sighting generated significant interest as the duck had not been recorded in India for a long time (reportedly 118 years since the last known sighting in the wild in Assam).