The third movement of Olivier Messiaen's Quartet for the End of Time is named "Abyss of" these entities, and in the first movement, the clarinet and violin imitate two of these. The second tone poem in Sibelius's Lemminkainen Suite is named after one of these "of Tuonela". A work describing one of these creatures contains a violin cadenza without bar lines and is based on 
The third movement of Olivier Messiaen's Quartet for the End of Time is named "Abyss of" these entities, and in the first movement, the clarinet and violin imitate two of these. The second tone poem in Sibelius's Lemminkainen Suite is named after one of these "of Tuonela". A work describing one of these creatures contains a violin cadenza without bar lines and is based on a George Meredith poem. Another one of these animals bewitches King Kashchei and is captured by Prince Ivan. For 10 points, name these animals, one of which, preceded by "fire", titles an Igor Stravinsky ballet.
The third movement of Olivier Messiaen's Quartet for the End of Time is named "Abyss of" these entities, and in the first movement, the clarinet and violin imitate two of these.
{bird}s [also accept black{bird}, {nightingale}, {swan}, {lark}, and fire{bird}]