Imagine the thrill of checking your nesting boxes daily and discovering a vibrant variety of chicken eggs in various colors. From classic white to shades of blue, green, olive, pink, and even rich ...

making them tetrachromatic (Figure 5; Hunt et al. 2009). Tetrachromats are theoretically able to see twice as many colors as trichromats (e.g., humans). For example, two eggs might appear ...