Two populations of birds stop interbreeding over time because they develop different song patterns. what type of isolation does this describe?

If two populations of birds stop interbreeding because of a difference in song patterns this would be described as behavioral isolation.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.