Peer-reviewed articles

  1. Callaghan, C. T., Borda-de-Água Luı́s, van Klink, R., Rozzi, R., & Pereira, H. M. (2023). Unveiling global species abundance distributions. Nature Ecology & Evolution, 1–10.
  2. Chowdhury, S., Fuller, R. A., Ahmed, S., Alam, S., Callaghan, C. T., Das, P., Correia, R. A., Di Marco, M., Di Minin, E., Jarić, I., & others. (2023). Using social media records to inform conservation planning. Conservation Biology, e14161.
  3. Callaghan, C. T., Chase, J. M., & McGlinn, D. J. (2023). Anthropogenic habitat modification causes nonlinear multiscale bird diversity declines. Ecography, e06759.
  4. Gorta, S. B. Z., Callaghan, C. T., Samonte, F., Ooi, M. K. J., Mesaglio, T., Laffan, S. W., & Cornwell, W. K. (2023). Multi-taxon biodiversity responses to the 2019–2020 Australian megafires. Global Change Biology.
  5. Headland, T., Colombelli-Négrel, D., Callaghan, C. T., Sumasgutner, S. C., Kleindorfer, S., & Sumasgutner, P. (2023). Smaller Australian raptors have greater urban tolerance. Scientific Reports, 13(1), 11559.
  6. Rowley, J. J. L., & Callaghan, C. T. (2023). Tracking the spread of the eastern dwarf tree frog (Litoria fallax) in Australia using citizen science. Australian Journal of Zoology.
  7. Chowdhury, S., Aich, U., Rokonuzzaman, M., Alam, S., Das, P., Siddika, A., Ahmed, S., Labi, M. M., Marco, M. D., Fuller, R. A., & others. (2023). Increasing biodiversity knowledge through social media: A case study from tropical Bangladesh. BioScience, biad042.
  8. Yang, M., Callaghan, C. T., & Wu, J. (2023). How do birds with different traits respond to Urbanization? A phylogenetically controlled analysis based on citizen science data and a diverse urbanization measurement. Landscape and Urban Planning, 237, 104801.
  9. Callaghan, C. T., Thompson, M., Woods, A., Poore, A. G. B., Bowler, D. E., Samonte, F., Rowley, J. J. L., Roslan, N., Kingsford, R. T., Cornwell, W. K., & others. (2023). Experimental evidence that behavioral nudges in citizen science projects can improve biodiversity data. BioScience, 73(4), 302–313.
  10. Thompson, M. M., Moon, K., Woods, A., Rowley, J. J. L., Poore, A. G. B., Kingsford, R. T., & Callaghan, C. T. (2023). Citizen science participant motivations and behaviour: Implications for biodiversity data coverage. Biological Conservation, 282, 110079.
  11. Santini, L., Tobias, J. A., Callaghan, C., Gallego-Zamorano, J., & Benı́tez-López Ana. (2023). Global patterns and predictors of avian population density. Global Ecology and Biogeography.
  12. Ferretto, G., Glasby, T. M., Poore, A. G. B., Callaghan, C. T., Sinclair, E. A., Statton, J., Kendrick, G. A., & Vergés, A. (2023). Optimising the restoration of the threatened seagrass Posidonia australis: plant traits influence restoration success. Restoration Ecology, 31, e13893.
  13. Spake, R., Bowler, D., Callaghan, C. T., Blowes, S. A., Doncaster, C. P., Antao, L. H., Nakagawa, S., McElreath, R., & Chase, J. M. (2023). Understanding ‘it depends’ in ecology: a guide to hypothesising, visualising and interpreting statistical interactions. Biological Reviews.
  14. Szabo, J. K., Forti, L. R., & Callaghan, C. T. (2023). Large biodiversity datasets conform to Benford’s law: Implications for assessing sampling heterogeneity. Biological Conservation, 109982.
  15. Valdez, J. W., Callaghan, C. T., Junker, J., Purvis, A., Hill, S. L. L., & Pereira, H. M. (2023). The undetectability of global biodiversity trends using local species richness. Ecography, e06604.
  16. Benedetti, Y., Callaghan, C. T., Ulbrichová, I., Galanaki, A., Kominos, T., Abou Zeid, F., Ibáñez-Álamo, J. D., Suhonen, J., Dı́az Mario, Markó, G., & others. (2023). EVI and NDVI as proxies for multifaceted avian diversity in urban areas. Ecological Applications, e2808.
  17. Mesaglio, T., Callaghan, C. T., Samonte, F., Gorta, S. B. Z., & Cornwell, W. K. (2023). Recognition and completeness: two key metrics for judging the utility of citizen science data. Frontiers in Ecology and the Environment.
  18. Gorta, S. B. Z., Callaghan, C. T., Pedler, R. D., Read, J. L., West, R. S., & Kingsford, R. T. (2023). Habitat associations of dryland avian communities during an extended dry period. Austral Ecology, 48(1), 56–80.
  19. Lee, J. S., Callaghan, C. T., & Cornwell, W. K. (2023). Using citizen science to measure recolonisation of birds after the Australian 2019–2020 mega-fires. Austral Ecology, 48, 31–40.
  20. Callaghan, C. T., Palacio, F. X., Benedetti, Y., Morelli, F., & Bowler, D. E. (2022). Large-scale spatial variability in urban tolerance of birds. Journal of Animal Ecology, 92(2), 403–416.
  21. Callaghan, C. T., Mesaglio, T., Ascher, J. S., Brooks, T. M., Cabras, A. A., Chandler, M., Cornwell, W. K., Cristóbal Rı́os-Málaver Indiana, Dankowicz, E., Urfi Dhiya’ulhaq, N., & others. (2022). The benefits of contributing to the citizen science platform iNaturalist as an identifier. PLoS Biology, 20(11), e3001843.
  22. Spake, R., Barajas-Barbosa, M. P., Blowes, S. A., Bowler, D. E., Callaghan, C. T., Garbowski, M., Jurburg, S. D., van Klink, R., Korell, L., Ladouceur, E., & others. (2022). Detecting thresholds of ecological change in the Anthropocene. Annual Review of Environment and Resources, 47, 797–821.
  23. Palacio, F. X., Callaghan, C. T., Cardoso, P., Hudgins, E. J., Jarzyna, M. A., Ottaviani, G., Riva, F., Graco-Roza, C., Shirey, V., & Mammola, S. (2022). A protocol for reproducible functional diversity analyses. Ecography, 11, e06287.
  24. Thompson, M. M., Rowley, J. J. L., Poore, A. G. B., & Callaghan, C. T. (2022). Citizen science reveals meteorological determinants of frog calling at a continental scale. Diversity and Distributions, 28(11), 2375–2387.
  25. Liu, G., Kingsford, R. T., Callaghan, C. T., & Rowley, J. J. L. (2022). Anthropogenic habitat modification alters calling phenology of frogs. Global Change Biology, 28(21), 6194–6208.
  26. Spake, R., O’Dea, R. E., Nakagawa, S., Doncaster, C. P., Ryo, M., Callaghan, C. T., & Bullock, J. M. (2022). Improving quantitative synthesis to achieve generality in ecology. Nature Ecology & Evolution, 6, 1818–1828.
  27. Benedetti, Y., Morelli, F., Callaghan, C. T., & Fuller, R. (2022). Distribution and protection of avian specialization in Europe. Global Ecology and Biogeography, 31(1), 10–24.
  28. Mansur, A. V., McDonald, R. I., Güneralp, B., Kim, H. J., de Oliveira, J. A. P., Callaghan, C. T., Hamel, P., Kuiper, J. J., Wolff, M., Liebelt, V., & others. (2022). Nature futures for the urban century: Integrating multiple values into urban management. Environmental Science & Policy, 131, 46–56.
  29. Schilling, H. T., Riley, I. J., Puckeridge, A. C., Milne-Muller, A., & Callaghan, C. T. (2022). Economic value of regional spearfishing competitions. Fisheries Research, 250, 106289.
  30. Roberts, C. J., Vergés, A., Callaghan, C. T., & Poore, A. G. B. (2022). Many cameras make light work: opportunistic photographs of rare species in iNaturalist complement structured surveys of reef fish to better understand species richness. Biodiversity and Conservation, 1–19.
  31. Callaghan, C. T., Bowler, D. E., Blowes, S. A., Chase, J. M., Lyons, M. B., & Pereira, H. M. (2022). Quantifying effort needed to estimate species diversity from citizen science data. Ecosphere, 13(4), e3966.
  32. Bolt, M. H., Callaghan, C. T., Poore, A. G. B., Vergés, A., & Roberts, C. J. (2022). Using the background of fish photographs to quantify habitat composition in marine ecosystems. Marine Ecology Progress Series, 688, 167–172.
  33. Segar, J., Callaghan, C. T., Ladouceur, E., Meya, J. N., Pereira, H. M., Perino, A., & Staude, I. R. (2022). Urban conservation gardening in the decade of restoration. Nature Sustainability, 1–8.
  34. Bowler, D. E., Callaghan, C. T., Bhandari, N., Henle, K., Benjamin Barth, M., Koppitz, C., Klenke, R., Winter, M., Jansen, F., Bruelheide, H., & others. (2022). Temporal trends in the spatial bias of species occurrence records. Ecography, e06219.
  35. Bowler, D. E., Bhandari, N., Repke, L., Beuthner, C., Callaghan, C. T., Eichenberg, D., Henle, K., Klenke, R., Richter, A., Jansen, F., & others. (2022). Decision-making of citizen scientists when recording species observations. Scientific Reports, 12(1), 1–11.
  36. Callaghan, C. T., Poore, A. G. B., Major, R. E., Cornwell, W. K., Wilshire, J. H., & Lyons, M. B. (2021). How to build a biodiverse city: environmental determinants of bird diversity within and among 1581 cities. Biodiversity and Conservation, 30(1), 217–234.
  37. Kirchhoff, C., Callaghan, C. T., Keith, D. A., Indiarto, D., Taseski, G., Ooi, M. K. J., Le Breton, T. D., Mesaglio, T., Kingsford, R. T., & Cornwell, W. K. (2021). Rapidly mapping fire effects on biodiversity at a large-scale using citizen science. Science of The Total Environment, 755, 142348.
  38. Callaghan, C. T., Sayol, F., Benedetti, Y., Morelli, F., & Sol, D. (2021). Validation of a globally-applicable method to measure urban tolerance of birds using citizen science data. Ecological Indicators, 120, 106905.
  39. Callaghan, C. T., & Rowley, J. J. L. (2021). A continental assessment of diurnality in frog calling behaviour. Austral Ecology, 46(1), 65–71.
  40. Callaghan, C. T., Poore, A. G. B., Mesaglio, T., Moles, A. T., Nakagawa, S., Roberts, C., Rowley, J. J. L., Vergés, A., Wilshire, J. H., & Cornwell, W. K. (2021). Three frontiers for the future of biodiversity research using citizen science data. BioScience, 71(1), 55–63.
  41. Callaghan, C. T., Watson, J. E. M., Lyons, M. B., Cornwell, W. K., & Fuller, R. A. (2021). Conservation birding: A quantitative conceptual framework for prioritizing citizen science observations. Biological Conservation, 253, 108912.
  42. Callaghan, C. T., Cornwell, W. K., Poore, A. G. B., Benedetti, Y., & Morelli, F. (2021). Urban tolerance of birds changes throughout the full annual cycle. Journal of Biogeography, 48(6), 1503–1517.
  43. Mesaglio, T., & Callaghan, C. T. (2021). An overview of the history, current contributions and future outlook of iNaturalist in Australia. Wildlife Research, 48(4), 289–303.
  44. Laitly, A., Callaghan, C. T., Delhey, K., & Cornwell, W. K. (2021). Is color data from citizen science photographs reliable for biodiversity research? Ecology and Evolution, 11(9), 4071–4083.
  45. Callaghan, C. T., Liu, G., Mitchell, B. A., Poore, A. G. B., & Rowley, J. J. L. (2021). Urbanization negatively impacts frog diversity at continental, regional, and local scales. Basic and Applied Ecology, 54, 64–74.
  46. Liu, G., Rowley, J. J. L., Kingsford, R. T., & Callaghan, C. T. (2021). Species’ traits drive amphibian tolerance to anthropogenic habitat modification. Global Change Biology, 27(13), 3120–3132.
  47. Callaghan, C. T., Nakagawa, S., & Cornwell, W. K. (2021). Global abundance estimates for 9,700 bird species. Proceedings of the National Academy of Sciences, 118(21), e2023170118.
  48. Callaghan, C. T., Bowler, D. E., & Pereira, H. M. (2021). Thermal flexibility and a generalist life history promote urban affinity in butterflies. Global Change Biology, 27(15), 3532–3546.
  49. Ferretto, G., Glasby, T. M., Poore, A. G. B., Callaghan, C. T., Housefield, G. P., Langley, M., Sinclair, E. A., Statton, J., Kendrick, G. A., & Vergés, A. (2021). Naturally-detached fragments of the endangered seagrass Posidonia australis collected by citizen scientists can be used to successfully restore fragmented meadows. Biological Conservation, 262, 109308.
  50. Callaghan, C. T., Poore, A. G. B., Hofmann, M., Roberts, C. J., & Pereira, H. M. (2021). Large-bodied birds are over-represented in unstructured citizen science data. Scientific Reports, 11(1), 1–11.
  51. Gorta, S. B. Z., Pedler, R. D., Kingsford, R. T., & Callaghan, C. T. (2021). Avifaunal use of an artificial waterpoint in the Strzelecki Desert during an extended dry period. Emu-Austral Ornithology, 121(4), 354–359.
  52. Callaghan, C. T., Benson, I., Major, R. E., Martin, J. M., Longden, T., & Kingsford, R. T. (2020). Birds are valuable: the case of vagrants. Journal of Ecotourism, 19(1), 82–92.
  53. Callaghan, C. T., Wilshire, J. H., Martin, J. M., Major, R. E., Lyons, M. B., & Kingsford, R. T. (2020). The Greenspace Bird Calculator: a citizen-driven tool for monitoring avian biodiversity in urban greenspaces. Australian Zoologist, 40(3), 468–476.
  54. Callaghan, C. T., Benedetti, Y., Wilshire, J. H., & Morelli, F. (2020). Avian trait specialization is negatively associated with urban tolerance. Oikos, 129(10), 1541–1551.
  55. Callaghan, C. T., Major, R. E., Cornwell, W. K., Poore, A. G. B., Wilshire, J. H., & Lyons, M. B. (2020). A continental measure of urbanness predicts avian response to local urbanization. Ecography, 43(4), 528–538.
  56. Callaghan, C. T., Roberts, J. D., Poore, A. G. B., Alford, R. A., Cogger, H., & Rowley, J. J. L. (2020). Citizen science data accurately predicts expert-derived species richness at a continental scale when sampling thresholds are met. Biodiversity and Conservation, 29(4), 1323–1337.
  57. Mitchell, B. A., Callaghan, C. T., & Rowley, J. J. L. (2020). Continental-scale citizen science data reveal no changes in acoustic responses of a widespread tree frog to an urbanisation gradient. Journal of Urban Ecology, 6(1), juaa002.
  58. Rowley, J. J. L., & Callaghan, C. T. (2020). The FrogID dataset: expert-validated occurrence records of Australia’s frogs collected by citizen scientists. ZooKeys, 912, 139.
  59. Justyn, N. M., Callaghan, C. T., & Hill, G. E. (2020). Birds rarely hybridize: A citizen science approach to estimating rates of hybridization in the wild. Evolution, 74(6), 1216–1223.
  60. Morelli, F., Benedetti, Y., & Callaghan, C. T. (2020). Ecological specialization and population trends in European breeding birds. Global Ecology and Conservation, 22, e00996.
  61. Francis, R. J., Brandis, K. J., Kingsford, R. T., & Callaghan, C. T. (2020). Quantifying bird diversity at three sites of differing herbivore presence. Journal of Ornithology, 161(4), 1117–1127.
  62. Callaghan, C. T., Ozeroff, I., Hitchcock, C., & Chandler, M. (2020). Capitalizing on opportunistic citizen science data to monitor urban biodiversity: A multi-taxa framework. Biological Conservation, 251, 108753.
  63. Rowley, J. J. L., Callaghan, C. T., & Cornwell, W. K. (2020). Widespread short-term persistence of frog species after the 2019–2020 bushfires in eastern Australia revealed by citizen science. Conservation Science and Practice, 2(11), e287.
  64. Weaver, S. J., Callaghan, C. T., & Rowley, J. J. L. (2020). Anuran accents: Continental-scale citizen science data reveal spatial and temporal patterns of call variability. Ecology and Evolution, 10(21), 12115–12128.
  65. Lyons, M. B., Brandis, K. J., Murray, N. J., Wilshire, J. H., McCann, J. A., Kingsford, R. T., & Callaghan, C. T. (2019). Monitoring large and complex wildlife aggregations with drones. Methods in Ecology and Evolution, 10(7), 1024–1035.
  66. Callaghan, C. T., Major, R. E., Wilshire, J. H., Martin, J. M., Kingsford, R. T., & Cornwell, W. K. (2019). Generalists are the most urban-tolerant of birds: a phylogenetically controlled analysis of ecological and life history traits using a novel continuous measure of bird responses to urbanization. Oikos, 128(6), 845–858.
  67. Rowley, J. J. L., Callaghan, C. T., Cutajar, T., Portway, C., Potter, K., Mahony, S., Trembath, D. F., Flemons, P., & Woods, A. (2019). FrogID: Citizen scientists provide validated biodiversity data on frogs of Australia. Herpetological Conservation and Biology, 14(1), 155–170.
  68. Callaghan, C. T., Major, R. E., Lyons, M. B., Martin, J. M., Wilshire, J. H., Kingsford, R. T., & Cornwell, W. K. (2019). Using citizen science data to define and track restoration targets in urban areas. Journal of Applied Ecology, 56(8), 1998–2006.
  69. Gorta, S. B. Z., Smith, J. A., Everett, J. D., Kingsford, R. T., Cornwell, W. K., Suthers, I. M., Epstein, H., McGovern, R., McLachlan, G., Roderick, M., & others. (2019). Pelagic citizen science data reveal declines of seabirds off south-eastern Australia. Biological Conservation, 235, 226–235.
  70. Callaghan, C. T., Bino, G., Major, R. E., Martin, J. M., Lyons, M. B., & Kingsford, R. T. (2019). Heterogeneous urban green areas are bird diversity hotspots: insights using continental-scale citizen science data. Landscape Ecology, 34(6), 1231–1246.
  71. Callaghan, C. T., Rowley, J. J. L., Cornwell, W. K., Poore, A. G. B., & Major, R. E. (2019). Improving big citizen science data: Moving beyond haphazard sampling. PLoS Biology, 17(6), e3000357.
  72. Callaghan, C. T., Poore, A. G. B., Major, R. E., Rowley, J. J. L., & Cornwell, W. K. (2019). Optimizing future biodiversity sampling by citizen scientists. Proceedings of the Royal Society B, 286(1912), 20191487.
  73. Alabai, M., Esau, T., Kekeubata, E., Waneagea, J., MacLaren, D., Major, R. E., & Callaghan, C. T. (2019). First record of Solomons Nightjar Eurostopodus nigripennis for Malaita, with a description of its nest site. Bulletin of the British Ornithologists’ Club, 139(4), 325–327.
  74. Callaghan, C. T., Kekeubata, E., Waneagea, J., Alabai, M., Esau, T., MacLaren, D., & Major, R. E. (2019). A collaborative bird survey of East Kwaio, Malaita, Solomon Islands. Check List, 15, 1119.
  75. Callaghan, C. T., Slater, M., Major, R. E., Morrison, M., Martin, J. M., & Kingsford, R. T. (2018). Travelling birds generate eco-travellers: The economic potential of vagrant birdwatching. Human Dimensions of Wildlife, 23(1), 71–82.
  76. Callaghan, C. T., Martin, J. M., Kingsford, R. T., & Brooks, D. M. (2018). Unnatural history: is a paradigm shift of natural history in 21st century ornithology needed? 160(2), 475–480.
  77. Callaghan, C. T., Martin, J. M., Major, R. E., & Kingsford, R. T. (2018). Avian monitoring–comparing structured and unstructured citizen science. Wildlife Research, 45(2), 176–184.
  78. Lyons, M., Brandis, K., Callaghan, C., McCann, J., Mills, C., Ryall, S., & Kingsford, R. (2018). Bird interactions with drones, from individuals to large colonies. Australian Field Ornithology, 35, 51–56.
  79. Callaghan, C. T., Major, R. E., Lyons, M. B., Martin, J. M., & Kingsford, R. T. (2018). The effects of local and landscape habitat attributes on bird diversity in urban greenspaces. Ecosphere, 9(7), e02347.
  80. Callaghan, C. T., Brandis, K. J., Lyons, M. B., Ryall, S., & Kingsford, R. T. (2018). A comment on the limitations of UAVS in wildlife research–the example of colonial nesting waterbirds. Journal of Avian Biology, 49(9), e01825.
  81. Callaghan, C. T. (2017). ’Shadow-boxing’ by a Northern Mockingbird (Mimus polyglottos). Florida Field Naturalist, 5(1), 21–23.
  82. Callaghan, C. T., Ryall, S., & Kingsford, R. T. (2017). A probable Australian White Ibis’ Threskiornis moluccus’x Straw-necked Ibis’ T. spinicollis’ hybrid. Australian Field Ornithology, 34, 47–48.
  83. Callaghan, C., Lyons, M., Martin, J., Major, R., & Kingsford, R. (2017). Assessing the reliability of avian biodiversity measures of urban greenspaces using eBird citizen science data. Avian Conservation and Ecology, 12(2).
  84. Callaghan, C. T., & Brooks, D. M. (2017). History, current distribution, and status of the Egyptian Goose (Alopochen aegyptiaca) in the contiguous United States. The Southwestern Naturalist, 62(4), 296–300.
  85. Callaghan, C. T., & Gawlik, D. E. (2016). Diet and selectivity of Porphyrio porphyrio (Purple Swamphen) in Florida. Southeastern Naturalist, 15(sp8), 1–14.
  86. Chastant, J. E., Callaghan, C. T., & King, D. T. (2016). Morphometric variation during chick development in interior double-crested Cormorants (Phalacrocorax auritus). Waterbirds, 39(3), 260–267.
  87. Callaghan, C. T. (2016). Pacific Golden-Plover (Pluvialis fulva) in Florida: a First State Record. Florida Field Naturalist, 44(4), 169–174.
  88. Callaghan, C. T., & Brooks, D. M. (2016). Ecology, Behavior, and Reproduction of Invasive Egyptian Geese (Alopochen aegyptiaca) in Texas. Bulletin of the Texas Ornithological Society, 49(1-2), 37–45.
  89. Callaghan, C. T., & Gawlik, D. E. (2015). Efficacy of eBird data as an aid in conservation planning and monitoring. Journal of Field Ornithology, 86(4), 298–304.

Book chapters

  1. Callaghan, C. T., & Brooks, D. M. (2020). Using citizen science to study exotic birds. Invasive Birds: Global Trends and Impacts, 362–367.
  2. Pranty, B., & Callaghan, C. T. (2020). Grey-headed Swamphen (Porphyrio poliocephalus Latham, 1801). Invasive Birds: Global Trends and Impacts, 243–247.
  3. Huysentruyt, F., Callaghan, C. T., Strubbe, D., Winston, K., Adriaens, T., & Brooks, D. M. (2020). Egyptian Goose (Alopochen aegyptiaca Linnaeus, 1766). Invasive Birds: Global Trends and Impacts, 206–212.
  4. Callaghan, C. T., Pranty, B., Pyle, P., & Patten, M. A. (2017). Gray-headed Swamphen (Porphyrio poliocephalus). Birds of the World (P. G. Rodewald and S. M. Billerman, Ed.).
  5. Callaghan, C. T., Brooks, D. M., & Pyle, P. (2017). Egyptian Goose (Alopochen aegyptiaca). Birds of the World (S. M. Billerman, Ed.).

Other publications