1. a breeding place or colony where herons nest together

Examples

• The wildlife sanctuary protects an important heronry along the river.
• Dozens of great blue herons return to the heronry each spring.
• Visitors can observe the heronry from a safe distance using binoculars.
• The ancient oak trees provide ideal nesting sites for the heronry.
• Conservation efforts helped restore the heronry after years of decline.
• The heronry becomes quite noisy during breeding season.