This document is the fifth report issued by the Extremaduran Rarities committee (CREX). The committee was created in 2016 and has six members. In this report a total of 58 records have been assessed, all from 2021 with the exception of two records, one from 2020 and the other from 2018. 91.4% of the records received were accepted favourably by the committee. Extremaduran birding tourism has been negatively impacted by the continuing Covid-19 pandemic , which explains a reduction in submissions of records from observers from elsewhere in Spain and abroad. However there was a slight increase in records this year compared to 57 records in 2019. Without doubt, 2021 stands out as being a year for ‘firsts’ for Extremadura, with records of three new species for the region submitted: Rough-legged Buzzard Buteo lagopus, Red-flanked Bluetail Tarsiger cyanurus and Baltimore Oriole Icterus galbula, the latter also being a first record for Spain. Other observations of interest were new records of Tundra Bean Goose Anser serrirostris, the third record of Western Reef Heron Egretta gularis, the fifth record of Great Northern Diver Gavia immer, the first record of Red-knobbed Coot Fulica cristata since 2018 and a new record of Snow Bunting Plectrophenax nivalis, the seventh for the region and the first since 2015.