Dučić's monographs about monasteries (Tvrdoš, Žitomislić, Morača, Ostrog) have not lost the cultural-historical value since science must further take some studies into consideration: Christmas in Montenegro (1867); Boka and Zeta (1875); Slav Manuscripts in the National Library in Paris (1889).

During the 1848 Revolution he joined the Austrians as a young volunteer, and after he returned to his native Herzegovina where at the Duži Monastery he took holy orders under the guidance of his uncle, the abbot (archimandrite).

The main scene of his achievement was in Bosnia and Herzegovina and when those hostilities died down, and there was no amnesty forthcoming from the Ottoman Porte and Constantinople as promised, Dučić left for Montenegro.

Returning with general Milojko Lešjanin, Nićifor Dučić, now Nicholas I of Montenegro's envoy, exchanged copies of a treaty with Mihailo Obrenović III, Prince of Serbia and Prime Minister Ilija Garašanin signed October 14, 1867.

With the accession of Prince Milan I of Serbia, the newly appointed prime minister Jovan Ristić employed Dučić for secret missions on behalf the Government, such as negotiating with the Turks.

During September 1873, as Ristić's envoy, Dučić held consultations with Croatian politicians Matija Mrazović [hr] and Franjo Rački about the unification of all Serbian people with Serbia.

They and Prince Nicholas believed that Montenegro's policy must be subject to Serbia's and that Serbian nation's salvation lays in complete unification with the rest of lands inhabited by Serbs.

As a contributor to newspapers and magazines, he came under the notice of Ilarion Ruvarac, who encouraged him to continue to produce well-researched historical monographs for learned societies and their periodicals and journals.

Njegoš's poetic works remained practically unrecognized and unnoticed by our littérateurs for more than two decades, until Nićifor Dučić wrote: Primjetbe na "Komentar Gorskog vijenca" (Belgrade, Državna Štamparija, 1870).