Complex sentence: There's little doubt that the gull's screaming in fact is a kind of communication, or in other words "a language", of course limited to the present tense, but it is still obviously includes rather complex matters, like "follow me".
Split into simpler sentences: There's little doubt that the gull's screaming in fact is a kind of communication. Or in other words "a language", of course limited to the present tense, but it still obviously includes rather complex matters, like "follow me".