Cinnamomum cassia United Kingdom, and India is Chinese cinnamon. "Indonesian cinnamon" ("C. burmannii") is sold in much smaller amounts. Chinese cassia is produced in both China and Vietnam. Until the 1960s, Vietnam was the world's most important producer of Saigon cinnamon, which has a higher oil content , and consequently has a stronger flavor. Because of the disruption caused by the Vietnam War, however, production of Indonesian cassia in the highlands of the Indonesia island of Sumatra was increased to meet demand. Indonesian cassia has the lowest oil content of the three types of cassia, so commands the lowest price. Chinese cassia
Cassia crossbill the red crossbill call types, the Cassia crossbill has a deeper and thicker bill to crack open the harder pine cones in its habitat. It’s body mass(g) ranges from 29.2-43.9, while its wing length(mm) 85.0-100.0 and bill depth(mm) 8.90-10.56. The Cassia crossbill is found year-round exclusively in the forests of the South Hills and Albion Mountains in South Idaho. Compared to its counterpart, the red crossbill, which is a global species, the total area the Cassia crossbill resides in equates to about 67km². They are almost exclusively found in mature and old-growth lodgepole pine dominated forests that do not have