Disclosed herein are precision seeder heads and seeder components that include precision seeder heads. According to some embodiments, a precision seeder head includes a seed queue tube having an inside circumference that is sized to accommodate one seed at any vertical location, a first seed hold that selectively blocks the seed queue tube when located in a default position and selectively unblocks the seed queue tube when located in the release position, and an optical sensor positioned at a vertical position below the first seed hold, the optical sensor adapted to detect seeds dispensed from the seed queue tube.
