Frequent Fliers: Birds on the Move
This is perhaps my favorite time of year! Flowers are blooming. Trees are getting their leaves back. The weather is getting nicer. Animals are emerging. And one of my favorite things…the birds are back! I absolutely love waking up in the morning to the birds chirping.
Millions of birds are making the lengthy journey from their wintering areas to their summer nesting grounds. Some may choose to stop here and make Iowa their summer home. Others though, may be traveling as far as northern Canada and the subarctic! Sometimes they may even be flying from as far away as South America!
This is an exciting time of year for anyone who is interested in our avian friends. The Cornell Lab BirdCast estimated nearly 1.5 million birds flew over Iowa in a single night, and nearly 207 million flew over the United States on the same night, April 29-30!
Iowa is located along the Mississippi River flyway, a migration highway for birds that extends from Canada to the Gulf of Mexico. Iowa’s variety of habitats, including forests, wetlands, prairies, and agricultural land provide an array of resources for the migrating birds to rest and refuel. Saylorville Reservoir, Rathbun Lake, and Neal Smith National Wildlife Refuge are all major stopovers along the route. You may have noticed American White Pelicans along the waterways or songbirds like Baltimore Orioles near homes and parks recently. These are just two of the hundreds of species that either migrate through or call Iowa home every year.
(American White Pelican, Cornell Lab)
(Baltimore Oriole, Cornell Lab)
Migration is not only exciting, but also important. Birds play an essential role in pollination, seed dispersal, and pest control. Without birds, our ecosystems would not be the same. The Ruby-throated Hummingbird is Iowa’s only bird pollinator, and you might even be able to catch a glimpse flitting around your feeders and flower gardens. The Northern Cardinal, perhaps one of Iowa’s most recognizable birds, is just one of many avian species that eat fruit and seeds and help disperse those seeds by passing them through their digestive system intact. Other birds, like the Black-capped Chickadee, may cache seeds for later. Some birds, like Northern House Wrens, eat insects, which can help control pest populations.
(Ruby-throated Hummingbird, Cornell Lab)
Despite the beauty and importance of our avian friends, bird populations across North America are declining rapidly, with reports of up to 3 billion birds lost since 1970. Some contributing factors include habitat loss, outdoor cats, collisions with windows, and pesticides. Many of these same factors are also contributing to the decline of other species, like pollinators.
There is hope though! You can help birds in several ways. One way is by enhancing bird habitat through acts like establishing a Conservation Reserve Program (CRP), creating a habitat for pollinators, or
planting or keeping trees. Planting native plants and trees will not only help our pollinator friends like butterflies, bees, and other insects, but will also help provide food and shelter for birds that rely on those
resources. If you have ever experienced a bird hitting your window, they might be seeing the reflections of vegetation or the sky, or they might be seeing house plants through the glass. Installing mosquito screens on the outside of the window or putting decals, stickers, sun catchers, or even sticky notes on your window can help reduce bird collisions.
There are many resources available for those of us that are interested in birds, and if you’re anything like me, they might be some of your favorite apps or resources, especially this time of year.
Check out a few of them below!
- Cornell Lab All About Birds
- Cornell Lab BirdCast
- Cornell Lab Merlin
- Audobon
- Audubon Bird Migration Explorer
- Iowa Ornithologists’ Union
- Iowa Wildlife Federation
- Bird Friendly Iowa
- iNaturalist




























