nests

The Heron Colony at the Great Blue Heron Nature Reserve is active from early March to late July.

Interesting Facts

  • the colony is situated in a grove of mature cottonwood trees.
  • the best colony viewing is from the dyke trial  just west of the Interpretive Centre.
  • in 2016, there were over 125 active nests.
  • herons choose a new mate each year.
  • nest selection and courting starts in early March.
  • 3 -5 eggs are laid in late March and hatch about a month later.
  • incubation is 28 days
  • chicks take 10 weeks to go from a newly hatched chick to a fully fledged juvenile.
  • on average 1 chick per nest survives.
  • eagles are a major predator, eating the eggs and chicks.
  • having one territorial eagle in their midst actually protects the herons from further predation from outside raptors