How many pterodactyls lived in a group?

Pterodactyls, specifically the species Pterodactylus, are believed to have lived in groups, often referred to as colonies. Estimates suggest that these colonies could consist of dozens to potentially hundreds of individuals, especially during breeding seasons. Fossil evidence indicates that they may have roosted together in large numbers, similar to modern-day seabirds. However, the exact number of individuals in a group can vary based on species and environmental factors.