Complex sentence: The marbled frogmouth share homologous structures with the tawny frogmouth, the most obvious being the shape of their bill; both have a beak that curves down slightly and becomes pointy at the ends.
Split into simpler sentences: The marbled frogmouth share homologous structures with the tawny frogmouth. The most obvious being the shape of their bill, both have a beak that curves down slightly and becomes pointy at the ends.