 His journal includes accounts ranging from his daily mundane tasks to impressions of the lands and the people he encountered, and it provides an alternative perspective to supplement Darwin's "Journal and Remarks", better known as "The Voyage of the Beagle".After the "Beagle" returned in 1836, Covington became Darwin's manservant and continued in his duties as a general amanuensis.His own collection of bird specimens was invaluable in establishing the relationship of "Darwin's Finches" to each of the Galapagos Islands as, unlike Darwin, he had taken care to label where each specimen had been taken.