Birds don't have teeth. They are the only class of vertebrates without teeth. Instead, they have a gizzard that grinds food, located between their crop and intestine. Some birds swallow clams and mussels whole and their gizzard grinds the shells into digestible material.
"Welcomes new birders, challenges repeat participants to hear and observe large numbers of neotropical migrators and offers the long-time birder an opportunity to discuss habitats, migratory patterns and bird behavior with renowned experts." - Repeat Visitor
