Frizztext’s A-Z Challenge this week on Flickr Comments at http://flickrcomments.wordpress.com/2014/01/14/tagged-b-2/ is the letter B. These seemed to be obvious choices.
A booming bullfrog at Spring Valley Nature Center.
A blue butterflyin the butterfly exhibit at Brookfield Zoo.
A blue boat on the Chicago River.
And a bridge leading to the Japanese Garden in the Chicago Botanic Garden.