| Scientific Name | Tyrannus vociferans vociferans |
| Category | D |
| Taxon | Birds |
| Climate Change Vulnerability Score | Less Vulnerable |
The Cassin's Kingbird (Tyrannus vociferans vociferans) is a medium-sized songbird (21-23 cm [8-9 in] long; 45 g [1.6 oz]) with a dark-gray head and back, dark tail, brown wings, and a yellow belly. It hunts for flying insects and can also take caterpillars and berries. It is found in a variety of open habitats with tall trees. It occurs in the southwestern US and south into Mexico. The Cassin’s Kingbird will experience a high degree of climate exposure and has a high adaptive capacity. Overall, it has a Climate Change Vulnerability Index ranking of Less Vulnerable under both Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 Scenarios. The Cassin’s Kingbird’s climate change vulnerability is impacted by life history factors, which influence its ability to persist in place.


