the current was adopted. The use of the eagle of St. John was exploited by the Spanish dictator Francisco Franco, who used it as a symbol of his regime. The Eagle of St. John's is also frequently used in modern civic heraldry. Piast and Přemyslid dynasties The eagles in the Polish, Moravian and Silesian coats of arms are based on 13th-century dynastic arms. The Silesian Piasts was the first branch of Piast dynasty to use an eagle for their coat of arms. The first documented use of the Upper Silesian Eagle was on the Casimir I of Opole's seal in 1222 and was later followed by the first use of the Lower Silesian Eagle by the Henry II the Pious in 1224. Przemysł II was the first Polish ruler to use the Polish Eagle as a coat of arms to represent the whole of Poland in 1295. The Margraviate of Moravia from at least the 1270s used a chequered eagle. The Moravian Eagle (without chequering) was first documented on the seal of Ottokar's uncle, Margrave Přemysl (d. 1239) and is thus likely derived from the coat of arms of the Přemyslid dynasty, who in the early 13th century used a "flaming eagle" coat of arms alongside the Bohemian lion for the Kingdom of Bohemia. Modern usage Heraldic eagles Heraldic eagles are enduring symbols used in the national coats of arms of a number of countries: Albania: Principality of Albania (1914), House of Kastrioti coat of arms Armenia: Quarterly, eagles for the Artaxiad and Arsacid dynasties (adopted 1992). Austria: Reichsadler (1919). Bogotá: was granted by the Emperor Charles V to the New Kingdom of Granada on December 3, 1548. Czech Republic: Quartered, Moravian and Silesian eagles (Jiří Louda 1992) Germany: the German Bundesadler (since 1950), a direct continuation of the Reichsadler design used in the Weimar Republic from 1928. Liechtenstein: Coat of arms of Hans-Adam II, Prince of Liechtenstein (b. 1945), with the Silesian eagle in the first quarter. Moldova: an eagle displayed holding an Orthodox cross in its beak, adopted 1990. Montenegro: Byzantine imperial eagle (2004). Poland: Piast dynasty, adopted 1990. Romania: Eagles for Wallachia and Transylvania, adopted 2016, partially based on the arms of Carol I of Romania (1881) Russia: Byzantine imperial eagle, adopted 1993, first adopted for Muscovy by Ivan III of Russia (1472). Serbia: Serbian eagle (Byzantine imperial eagle, Nemanjić dynasty). Naturalistic eagles United States Since 20