Original: In addition, some suggest that the Bronze-tailed Barbthroat (T. n. loehkeni) should also be considered a valid species and include the doubtful Christina's Barbthroat (T. n. christinae) as a subspecies.
Simplified: Not only that, but some suggest that the Bronze-tailed Barbthroat (T. n. loehkeni) should also be thought a valid species and have the doubtful Christina's Barbthroat (T. n. christinae) as a subspecies.