Cinnamomum cassia Cinnamomum cassia Cinnamomum cassia, called Chinese cassia or Chinese cinnamon, is an evergreen tree originating in southern China, and widely cultivated there and elsewhere in southern and eastern Asia (India, Indonesia, Laos, Malaysia, Taiwan, Thailand, and Vietnam). It is one of several species of "Cinnamomum" used primarily for their aromatic bark, which is used as a spice. In the United States, Chinese cassia is the most common type of cinnamon used. The buds are also used as a spice, especially in India, and were once used by the ancient Romans. The tree grows to tall, with greyish bark and hard,
Cassia crossbill mentioned previously, the red crossbill had 10 different call types and the Cassia crossbill was call type 9. The Cassia Crossbill fledgling initially imitates its parents’ flight calls and eventually will modify its call to imitate their mate. Compared to the other call types, the Cassia crossbills songs will be more repetitive while using fewer syllables. The individual notes of the song are typically buzzier and will have multiple instances of silence in between call phrases. Their song consists of strained and sharp "chip" and "kip" calls. Occasionally when red crossbills forage, there will be overlap between different call types.