From 2008 to 2012 Iowa conducted its second Breeding Bird Atlas project.

The first atlas project was conducted from 1985 through 1990 and new data shows us range expansions and contractions over the past 20+ years. During this time the landscape changed with the use of CRP increasing our grasslends.

Read Full Article …

Henslow's Sparrow, a threatened species in the state, is no doubt the greatest success story in Iowa's breeding birds. Increased grasslands have made a huge difference.

Read Full Article …

• Species Accounts

  Compare statewide distribution maps between BBA 1 and BBA 2.

  More …

• Block Summary

  View an interactive chart of all blocks, the effort, and the species recorded.

  More …

• Effort &Volunteers

  Congratulate our many volunteers without whom this survey would never have been completed.

  More …

• Methodology
• Read the project newsletters
• Block Maps
• Steering Committee