The Medium Ground-Finch (Geospiza fortis) is one of the "Darwin Finches" endemic to the Galapagos Islands. The first 2 shots on this page were digital captures taken in July, 2003. The first shot on Santa Maria and the next shot on Santa Cruz Island with a Canon EOS 10D and an EF 70-200 mm F/2.8 L IS lens and 2X extender. Telling Small, Medium, and Large Ground Finches apart has to do with the bill structure.

Darwin's finches (also known as the Galápagos Finches or as Geospizinae) are a group of 15 species of Passerine birds, now placed in the tanager family rather than the true finch family. They were first collected by Charles Darwin on the Galápagos Islands during the second voyage of the Beagle. Thirteen are found on the Galápagos Islands and one on Cocos Island. The birds are all about the same size (10–20 cm). The most important differences between species are in the size and shape of their beaks, and the beaks are highly adapted to different food sources.