Bird Week is an action game for the Japanese Nintendo Famicom system. The goal of the game is to fly around and collect butterflies, which are then fed to the protagonist's children who continue to get hungrier as time progresses. The player must also evade various dangers between collecting the butterflies and delivering them back to the nest.
The game was the first to be developed by Lenar for the system. Their second would be the notorious Deadly Towers a.k.a. Mashou.