Harper, D G C (2006) Maynard Smith: amplifying the reasons for signal reliability. Journal of Theoretical Biology, 239 (2). pp. 203-209. ISSN 0022-5193

Harper, David (2005) Recognition of avian sibling species. Auk, 122 (4). pp. 1291-1292. ISSN 0004-8038

Smith, John Maynard and Harper, David (2004) Animal Signals. Oxford University Press. ISBN 9780198526858

Brickle, N W and Harper, D G C (2002) Agricultural intensification and the timing of breeding of Corn Buntings Miliaria calandra. Bird Study, 49 (3). pp. 219-228. ISSN 0006-3657

Thomas, Robert J, Széskely, Tamás, Cuthill, Innes C, Harper, David G C, Newson, Stuart E, Frayling, Tim D and Wallis, Paul D (2002) Eye size in birds and the timing of song at dawn. Proceedings B: Biological Sciences, 269 (1493). pp. 831-837. ISSN 1471-2954

Harper, David G C and Randall, David P (2001) Mites on birds - Comment from Harper & Randall. Trends in Ecology and Evolution, 16 (1). p. 19. ISSN 0169-5347

Gosler, A G and Harper, D G C (2000) Assessing the heritability of body condition in birds: a challenge exemplified by the Great Tit Parus major L.(Aves). Biological Journal of the Linnean Society, 71 (1). pp. 103-117. ISSN 0024-4066

Brickle, Nick W, Harper, David G C, Aebischer, Nicholas J and Cockayne, Simon H (2000) Effects if agricultural intensification on breeding success of Corn Buntings (Miliaria calandra). Journal of Applied Ecology, 37 (5). pp. 742-755. ISSN 00218901

Brickle, N W and Harper, D G C (1999) Diet of nestling Corn Buntings Miliaria calandra in southern England examined by compositional analysis. Bird Study, 46 (3). pp. 319-329. ISSN 00063657

Harper, David G C (1999) Feather mites, pectoral muscle condition, wing length and plumage coloration of passerines. Animal Behaviour, 58 (3). pp. 553-562. ISSN 0003-3472

Smith, Maynard J and Harper, D G C (1995) Animal signals: models and terminology. Journal of Theoretical Biology, 177 (3). pp. 305-311. ISSN 0022-5193

Harper, D G C (1985) Brood division in robins. Animal Behaviour, 33 (2). pp. 466-480. ISSN 0003-3472