Diane Porter of Fairfield first published this post on My Gaia, an email newsletter “about getting to know nature” and “giving her a helping hand in our own backyards.” Diane also maintains the Birdwatching Dot Com website and bird blog.
On September 9 I watched a Ruby-throated Hummingbird visit the purple blossoms of Rough Blazing Star (Liatris aspera). For a couple of seconds she hovers at bill’s length from the flowers, then moves slightly up or around the stalk. I couldn’t see her tongue, but I knew she was using it to slurp out the nectar.
Most adult males had already migrated out of Iowa by that time. Females and the young of the year linger a while longer. They zip around seeking flower sugar, which they will put away in the form of hummingbird fat. They must store calories to power their long migratory flight south, right across the Gulf of Mexico and on into Central America.
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