Hairy and Downy Woodpeckers look very similar and can be difficult to differentiate between them while birdwatching.
This microlearning course focuses on three key differences between Hairy and Downy Woodpeckers: bill size, body size, and sound. Each difference is described with short and clear text and accompanied by an image or link to sound. The course ends with a few quiz questions as a quick understanding check.
While there are a few more subtle differences, for this microlearning course I focused on the three differences that would be easiest to recognize.