Nesting Season at Ballard Locks: A Guide to Seattle’s Great Blue Herons

Seattle’s Ballard Locks are a prime location for observing the majestic great blue heron, particularly during nesting season. These birds, officially designated as Seattle’s official bird, attract birdwatchers and nature enthusiasts alike. This article provides an overview of the herons’ nesting habits, where to spot them, and the efforts to protect their habitat.

Great Blue Herons in Seattle: An Overview

The great blue heron (Ardea herodias) is a common sight in the Pacific Northwest, and Seattle provides a crucial habitat for these birds. Approximately 16 great blue herons can be found in Commodore Park [2]. They are known for their impressive size, standing at around four feet tall with a wingspan of over six feet.

Nesting Habits and Locations

Nesting season at the Ballard Locks brings increased activity as the herons build nests and raise their young. Historically, eagle attacks have disrupted heron nesting sites, causing them to relocate. After a series of attacks, the herons moved to the towering trees at Commodore Park, where they are easily visible from the grassy area below [3]. In 2016, a “baby boom” filled a tiny park near the Ballard Locks after the herons relocated [4].

Where to Spot Great Blue Herons

Commodore Park, near the Ballard Locks, is a particularly good location for viewing the herons. The trees provide ideal nesting sites, and the open grassy area allows for easy observation. As of March 2, 2026, nesting season is underway, offering opportunities to witness these birds in their natural habitat [1].

Conservation Efforts

Organizations like Heron Habitat Helpers play a vital role in monitoring heron populations and protecting their nesting sites. These groups work to raise awareness about the importance of preserving heron habitats and minimizing disturbances during nesting season.

Key Takeaways

• The great blue heron is Seattle’s official bird.
• Commodore Park near the Ballard Locks is a prime location for viewing herons.
• Eagle attacks have historically impacted heron nesting sites, leading to relocation to Commodore Park.
• Nesting season is currently underway.