What are vertical cane flutes with an end-notched design, commonly used during the dry season?

Vertical cane flutes with an end-notched design that are commonly used during the dry season are known as quenas. This type of flute is traditionally made from bamboo or cane, and its construction allows for a distinctive sound that is important in Andean music. Quenas are played by blowing across the top, and the end-notched design helps produce a range of notes, making them vital in various musical forms in the Andes. This instrument is especially popular in regions where the dry season is prevalent, as the lighter, airy sound of the quena complements the cultural practices and festivities during this time.

In contrast, other choices like teponaztli and siku refer to different types of musical instruments native to various cultures, with distinct characteristics and playing techniques, which are not aligned with the specifics of the question. An ocarina, while also a wind instrument, has a different construction and sound production method compared to quenas.