Henslow's Sparrow, a threatened species in the state, along with several other grassland species are some of
the greatest success stories in Iowa's breeding birds. Increased grasslands have made
a huge difference. Iowa has also made investments in wetland restoration and healthy
forest management. Here we highlight a few species where breeding seems
to be on the increase. The State of Iowa's Birds will give you a quick overview of trends for Iowa;s breeders. Be sure to also see the chart of Iowa Important Bird Area criteria species to see the changes in nesting
status for these endangered, threatened, and conservation concern species.
Grassland Species
| |
Blocks Recorded |
Confirmed/Probable Blocks |
| Sedge Wren |
+52.8% |
+42.6% |
| Henslow's Sparrow |
+27.3% |
+12.5% |
| Bobolink |
+15.4% |
+16.7% |
| Grasshopper Sparrow |
+7.8% |
+2% |
| Upland Sandpiper |
+3% |
+2.6% |
Wetland Species
| |
Blocks Recorded |
Confirmed/Probable Blocks |
| Pied-billed Grebe |
+10.9% |
+6.4% |
| Sandhill Crane |
+6.7% |
+5.4% |
| Virginia Rail |
+5.5% |
+4.4% |
| American Bittern |
+4.7% |
+1.3% |
| Least Bittern |
+1.9% |
+1.1% |
Woodland Species
| |
Blocks Recorded |
Confirmed/Probable Blocks |
| Pileated Woodpecker |
+13.4% |
+12.5% |
| Wood Thrush |
+8.7% |
+12.1% |
| Red-shouldered Hawk |
+8.4% |
+4.9% |
| Broad-winged Hawk |
+6.2% |
+4.9% |
| Kentucky Warbler |
+2.3% |
+2.4% |