{'fraction_non_alphanumeric': 0.034993270524899055, 'fraction_numerical': 0.05787348586810229, 'mean_word_length': 5.144628099173554, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 1, 'https://': 0, 'lorem ipsum': 0, 'www.': 1, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Fourth Report of the Alaska Checklist Committee, 2013-2017

The fourth report of the Alaska Checklist Committee outlines 22 species and two subspecies added to the Checklist of Alaska Birds during the five years 2013–2017, resulting in a net total of 521 species and 119 additional subspecies of birds recognized as occurring or having occurred naturally in Alaska through 2017. During the period 2013–2017, 22 species and two subspecies were added to the Checklist of Alaska Birds, resulting in a total of 521 species and 119 additional subspecies recognized by the Alaska Checklist Committee (AKCLC) at the beginning of 2018 as occurring or having occurred naturally in Alaska. Organized in 2000, the committee comprises six voting members (above) and a nonvoting secretary (Withrow). We post a new edition of the Checklist of Alaska Birds early in each new year at the University of Alaska Museum’s website, where the 24th edition (dated 1 January 2018) can be found at <www.universityofalaskamuseumbirds/products/checklist/pdf>. The current Checklist of Alaska Birds is founded on the “Inventory of the species and subspecies of Alaska birds” (Gibson and Kessel 1997) and incorporates additions, deletions, status changes, taxonomic and nomenclatural changes, etc., reflected in earlier AKCLC reports (Gibson et al. 2003, 2008, 2013), in the second edition of the “Inventory” (Gibson and Withrow 2015), and on information we report here for the first time. Volume 49, Number 3, 2018