Complex sentence: The Fork-Tailed Flycatcher is very dark gray on top, and white on the bottom, with an extremely long double forked tail, even longer than it's cousin, the Scissor-Tailed Flycatcher.
Split into simpler sentences: The Fork-Tailed Flycatcher is dark gray on top, and white on the bottom. It has an extremely long double forked tail, even longer than it's cousin, the Scissor-Tailed Flycatcher.