Harassing a chicken will soon send an endless flock of angry birds attacking Link. The only escape is to get out that area fast, if the player is lucky. While this game requires a lot of strikes in order to do so, later games reduced it to three strikes minimum to call for chickens to attack Link.
The theme from Kakariko Village is inspired by the music from Kiki's Delivery Service.
First Zelda game to feature pieces of heart instead of complete containers.
The subtitle of the Japanese version was Triforce of the Gods. However, Nintendo of America had very stringent policies towards religious themes at the time, and thus it was changed. Furthermore, Agahnim was a priest in the Japanese version, but a wizard in the English version; the 'Megami' (Godess) became the Fat Fairy, the Church became the Sanctuary, and Priests became Sages. Lastly, while the Hylian language was based on Egyptian symbols in the Japanese version, these were replaced by random symbols for the English version. Nintendo has changed its policy since, and references to deities have become widespread in the series.
First Zelda game in which an Ocarina appears (although it it still called the Flute. The name "Ocarina" didn't enter the Zelda franchise until Link's Awakening.)