1. 1985. Johnson, N. K. and C. CICERO. The breeding avifauna of San Benito Mountain, California: Evidence for change over one-half century. Western Birds 16:1-23.
    2. 1986. Johnson, N. K. and C. CICERO. Richness and distribution of montane avifaunas in the White-Inyo Region, California. Pages 137-159 in C. A. Hall, Jr. and D. J. Young (eds.). Natural History of the White-Inyo Range, eastern California and western Nevada and high altitude physiology. Proceedings of the University of California White Mountain Research Station Symposium, August 23-25, 1985. Bishop, California, volume 1:i-240.
    3. 1987. Barnhardt, S., J. R. McBride, P. Da Silva, C. CICERO, and P. Warner. Vegetation dynamics of the northern oak woodland. Pp. 53-58 in U.S. Forest Service General Technical Report PSW-100, Berkeley, CA.
    4. 1987. Melchiors, M.A. and C. CICERO. Streamside and adjacent upland forest habitats in the Ouachita Mountains. Proceedings of the Annual Conference Southeastern Association of Fish and Wildlife Agencies 41:385-393.
    5. 1989. CICERO, C. Avian community structure in a large urban park: controls of local richness and diversity. Landscape and Urban Planning 17:221-241.
    6. 1991. Johnson, N. K. and C. CICERO. Breeding birds. Pages 361-436 in Natural History of the White-Inyo Range, eastern California (C. A. Hall, Jr., ed.). University of California Press, Berkeley, CA, 536 pp.
    7. 1991. Johnson, N. K. and C. CICERO. Mitochondrial DNA sequence variability in two species of sparrows of the genus Amphispiza. Acta Congressus Internationalis Ornithologici: 600-610.
    8. 1992. CICERO, C. and N. K. Johnson. Genetic differentiation between populations of Hutton’s Vireo (Aves: Vireonidae) in disjunct allopatry. Southwestern Naturalist 37:344-348.
    9. 1993. CICERO, C. Vulnerability of prey stimulates attacks by jays and shrikes on adult birds. Western Birds 24:101-102.
    10. 1994. CICERO, C. and N. K. Johnson. Mitochondrial DNA divergence at the cytochrome b locus in sapsuckers. Journal fur Ornithologie 135:351 (abstract).
    11. 1995. CICERO, C. and N. K. Johnson. Speciation in sapsuckers (Sphyrapicus): III. Mitochondrial-DNA sequence divergence at the cytochrome-b locus. Auk 112:547-563.
    12. 1995. CICERO, C. Book Review: The Marin County Breeding Bird Atlas. A Distributional and Natural History of Coastal California Birds (by W. D. Shuford), and Atlas of the Breeding Birds of Monterey County, California (by D. Roberson and C. Tenney, eds.). Auk 112:530-533.
    13. 1996. CICERO, C. Sibling species of titmice in the Parus inornatus complex (Aves: Paridae). University of California Publications in Zoology 128:1-217.
    14. 1996. CICERO, C. and N. K. Johnson. Declining scientific standards in studies of avian distribution. Book Review: California Birds: Their Status and Distribution (by A. Small). Auk 113:522-523.
    15. 1997. CICERO, C. Boggy meadows, livestock grazing, and interspecific interactions: influences on the insular distribution of montane Lincoln’s Sparrows (Melospiza lincolnii alticola). Great Basin Naturalist 57:104-115.
    16. 1998. Johnson, N. K., J. V. Remsen, Jr., and C. CICERO. Refined colorimetry validates endangered subspecies of the Least Tern. Condor 100:18-26.
    17. 1998. Johnson, N. K., J. V. Remsen, Jr., and C. CICERO. Biologic species of birds in theory and practice. Abstract in Proceedings of the XXII International Ornithological Congress, Durban (N. J. Adams and R. H. Slotow, eds.). Ostrich (Journal of African Ornithology):81.
    18. 1998. CICERO, C. and N. K. Johnson. Molecular phylogeny and ecological diversification in a clade of New World songbirds (genus Vireo). Molecular Ecology 7:1359-1370.
    19. 1999. Johnson, N. K., J. V. Remsen, Jr., and C. CICERO. Resolution of the debate over species concepts in ornithology: a new comprehensive biologic species concept. Pages 1470-1482 in Proceedings of the 22 International Ornithological Congress, Durban (Adams, N. J. And R. H. Slowtow, eds.). Johannesburg: Birdlife South Africa.
    20. 2000. CICERO, C. and Z Morgan Benowitz-Fredericks. Song themes and variation in insular populations of Lincoln’s Sparrows (Melospiza lincolnii), with comparisons to other species of Melospiza. Auk 117:52-64.
    21. 2000. CICERO, C. Oak Titmouse (Baeolophus inornatus) and Juniper Titmouse (Baeolophus ridgwayi). In The Birds of North America, No. 485 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA. 28 pp.
    22. 2000. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-second supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 117:847-858.
    23. 2001. CICERO, C. and N. K. Johnson. Higher level phylogeny of vireos (Aves: Vireonidae) based on sequences of multiple mtDNA genes. Molecular Phylogenetics and Evolution 20:27-40.
    24. 2002. CICERO, C. and N. K. Johnson. Molecular phylogeny and character evolution in the Empidonax group of tyrant flycatchers. Molecular Phylogenetics and Evolution 22:289-302.
    25. 2002. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-third supplement to the American Ornithologists’ Union Check-list of North American Birds.Auk 119:897-906.
    26. 2002. Johnson, N. K. and C. CICERO. The role of ecologic diversification in sibling speciation of Empidonax flycatchers (Tyrannidae): Multigene evidence from mtDNA. Molecular Ecology 11:2065-2081.
    27. 2003. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-fourth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 120:923-931.
    28. 2004. CICERO, C. In Memoriam: Ned K. Johnson. Auk 121:600-602.
    29. 2004. Johnson, N. K. and C. CICERO. New mtDNA data affirm the importance of Pleistocene speciation in North American birds. Evolution 58:1122-1130.
    30. 2004. CICERO, C. Barriers to sympatry between avian sibling species (Paridae: Baeolophus) in tenuous secondary contact. Evolution 58:1573-1587.
    31. 2004. Moritz, C. and C. CICERO. DNA barcoding: Promise and pitfalls. Correspondence in response to Herbert et al., PLOS 2:e312 (2004), Identification of birds through DNA barcodes. PLOS 2:e354.
    32. 2004. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-fifth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 121:985-995.
    33. 2005. Peterson, A. T., C. CICERO, and J. Wieczorek. Free and open access to bird specimen data: Why? Auk 122:987-990.
    34. 2005. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-sixth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 122:1026-1031.
    35. 2005. Robbins, M. B., D. E. Seibel, and C. CICERO. Yellow-bellied (Sphyrapicus varius) x Red-breasted (S. ruber) sapsucker hybrid from eastern Kansas, with comments on the field identification of adult sapsuckers. North American Birds 59:360-363.
    36. 2005. COMMITTEE ON MEMORIAL RESOLUTIONS (Chair of 3 member committee). Ned K. Johnson. In Memoriam. Academic Senate, University of California, Berkeley.
    37. 2006. CICERO, C. and N. K. Johnson. Diagnosability of subspecies: Lessons from Sage Sparrows (Amphispiza belli) for analysis of geographic variation in birds. Auk 123:266-274.
    38. 2006. CICERO, C. and N. K. Johnson. The tempo of avian diversification: Reply. Evolution 60:413-414. [Reply to R. M. Zink and J. Klicka, The tempo of avian diversification: A comment on Johnson and Cicero, Evolution 60:411-412.].
    39. 2006. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 8 members). Forty-seventh supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 123:926-936.
    40. 2007. CICERO, C. and J. V. Remsen, Jr. (eds.). Festschrift for Ned K. Johnson: Geographic variation and evolution in birds. Ornithological Monographs 63, American Ornithologists’ Union, Washington, D.C.
    41. 2007. Remsen, J. V., Jr. and C. CICERO. A tribute to the career of Ned K. Johnson: Enduring standards through changing times. Pages 1-17 in Festschrift for Ned K. Johnson: Geographic variation and evolution in birds (C. Cicero and J. V. Remsen, Jr., eds.). Ornithological Monographs 63, American Ornithologists’ Union, Washington, D.C.
    42. 2007. CICERO, C. and Ned K. Johnson. Narrow contact of desert Sage Sparrows (Amphispiza belli nevadensis and A. b. canescens) in Owens Valley, eastern California: Evidence from mitochondrial DNA, morphology, and GIS-based niche models. Pages 78-95 in Festschrift for Ned K. Johnson: Geographic variation and evolution in birds (C. Cicero and J. V. Remsen, Jr., eds.). Ornithological Monographs 63, American Ornithologists’ Union, Washington, D.C.
    43. 2007. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 10 members). Committee on Classification and Nomenclature of Birds (North and Middle America) policy on English names of birds. Auk 124:1472.
    44. 2007. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 10 members). Forty-eighth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 124:1109-1115.
    45. 2008. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE
      (one of 11 members). Forty-ninth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 125:758-768.
    46. 2009. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fiftieth supplement to the American Ornithologists’ Union Check-list
      of North American Birds. Auk 126:705-714.
    47. 2009. AOU COMMITTEE ON BIRD COLLECTIONS (one of 11 members). Basic standards for bird collections. Auk 126:941-942.
    48. 2010. CICERO, C. The significance of subspecies: A case study of Sage Sparrows. Pages 103-113 in Avian Subspecies (K. Winker and S. M. Haig, eds.). Ornithological Monographs 67, American Ornithologists’ Union, Washington, D.C.
    49. 2010. Winker, K., J. M. Reed, P. Escalante, R. A. Askins, C. CICERO, G. E. Hough, and J. Bates. The importance, effects, and ethics of bird collecting. Auk 127:690-695.
    50. 2010. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fifty-first supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 127:726-744.
    51. 2011. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fifty-second supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 128:600-613.
    52. 2012. van Els, P., C. CICERO, and J. Klicka. High latitudes and high genetic diversity: Phylogeography of a widespread boreal bird, the Gray Jay (Perisoreus canadensis). Molecular Phylogenetics and Evolution 63:456-465.
    53. 2012. CICERO, C. and M. S. Koo. The role of niche divergence and phenotypic adaptation in promoting lineage diversification in the Sage Sparrow (Artemisiospiza belli, Aves: Emberizidae). Biological Journal of the Linnean Society 107:332-354.
    54. 2012. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fifty-third supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 129:573-588.
    55. 2013. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fifty-fourth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 130:558-571.
    56. 2014. Mason, N. A., P. O. Title, C. CICERO, K. J. Burns, and R. C. K. Bowie. Genetic variation among western populations of the Horned Lark (Eremophila alpestris) indicates recent colonization of the Channel Islands off southern California, mainland-bound dispersal, and postglacial range shifts. The Auk: Ornithological Advances 131:162-174.
    57. 2014. Gowen, F. C., J. M. Maley, C. CICERO, A. T. Peterson, B. C. Faircloth, T. C. Warr, and J. E. McCormack. Speciation in Western Scrub-Jays, Haldane’s rule, and genetic clines in secondary contact. BMC Evolutionary Biology 14:135.Blog: The Oregon Bird Records Committee Online Forum
      Blog: The Natural Observer
    58. 2014. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 12 members). Fifty-fifth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 131:CSi–CSxv
    59. 2015. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 13 members). Fifty-sixth supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 132:748-764.
    60. 2016. AOU COMMITTEE ON CLASSIFICATION AND NOMENCLATURE (one of 11 members). Fifty-seventh supplement to the American Ornithologists’ Union Check-list of North American Birds. Auk 133:544.
    61. 2016. Freund, D., S. S. Wheeler, A. K. Townsend, W. M. Boyce, H. B. Ernest, C. CICERO, and R. N. M. Sehgal. Genetic sequence data reveals widespread sharing of Leucocytozoon lineages in corvids. Parasitology Research 115:3557-3565. DOI 10.1007/s00436-016-5121-3.
    62. 2017. Pauli, J. N., S. D. Newsome, J. A. Cook, C. Harrod, S. A. Steffan, C. J. O. Baker, M. Ben-David, D. Bloom, G. J. Bowen, T. Cerling, C. CICERO, C. Cook, M. Dohm, P. S. Dharampal, G. R. Graves, R. Gropp, K. A. Hobson, C. Jordan, B. J. MacFadden, S. Pilaar Birch, J. Poelen, S. Ratnasingham, L. Russell, C. A. Stricker, M. D. Uhen, C. T. Yarnes, and B. Hayden. Opinion: Nucleating IsoBank. Proceedings of the National Academy of Sciences 114:2997-3001.
    63. 2017. Bowie, R. C. K., K. A. Feldheim, Z. R. Hanna, A. B. Sellas, and C. CICERO. Development of polymorphic tetranucleotide microsatellite markers for New World Warblers (Aves: Passeriformes: Parulidae) with broad cross-species utility. Wilson Bulletin 129:401-407.
    64. 2017. CICERO, C., C. L. Spencer, D. A. Bloom, R. P. Guralnick, M. S. Koo, J. Otegui, L. Russell. J. R. Wieczorek. Biodiversity informatics and data quality on a global scale. In M. S. Webster, ed. Emerging Frontiers in Collections-based Ornithological Research: The Extended Specimen. Studies in Avian Biology. CRC Press, Boca Raton, Florida.
    65. 2017. Webster, M. S., C. CICERO, J. Bates, S. Hackett, L. Joseph. Ornithological collections in the 21st century. In M. S. Webster, ed. Emerging Frontiers in Collections-based Ornithological Research: The Extended Specimen. Studies in Avian Biology. CRC Press, Boca Raton, Florida.

Featured image: Study skins of Sagebrush and Bell’s sparrows in the MVZ, illustrating size and color differences between taxa. Image courtesy of Anand Varma.