We document changes in the avifauna of Longueville, a residential suburb of Sydney, between 197173 and 197779 based on daily bird lists, and make comparisons with the present avifauna based on surveys in 201314. Of the 31 most common native terrestrial bird species, 17 were decreasers, present in 197173 but not recorded in 201314 (although 16 of them were recorded in a large bushland remnant 5 km away), and 14 were increasers, seven of which were absent or very rare in 197173. Eleven species decreased during the 1970s, and six species afterwards. Eight species increased during the 1970s and six species afterwards. The decreasers were predominantly small insectivores and nectarivores. The increasers were of three main types: medium to large carnivores, large frugivores or granivores, and medium-sized nectarivores. Two of the nectarivores, the noisy miner (Manorina melanocephala) and rainbow lorikeet (Trichoglossus haematodus), now dominate the urban bird community of Longueville and are by far the most numerous birds. The increase of both species dates from the late 1970s. The noisy miner is highly aggressive towards other birds and its dramatic increase (it was absent in 197173) appears to be the chief cause of the decline of small native birds in Longueville.
Australian Journal of Zoology – CSIRO Publishing
Published: Sep 10, 2020