The collection was created in the beginning of 20-th century. Until the Second World War it stored much higher number of eggs but as a result of bombings many of them were seriously damaged and broken. At present the nests and eggs are mostly from birds breeding in Bulgaria and the neighbouring parts of SE Europe. There are also nests and eggs from tropical, N European and N American birds. The collection is not inventarised and digitalised. It is stored in the same depots as the skins of the recent birds. That depot is large and renewed, modern, climatised, at 100% full.
Collection consist of 150 nests and 420 eggs of recent birds.