CONTRIBUTED PAPERS
HAMZA, A. & WONG, C. 2020. Updates on seabirds of the northern Seribuat Islands, Pahang, Malaysia . . . 1
GUTOWSKY, S.E., HIPFNER, J.M., MAFTEI, M., BOYD, S., AUGER-MÉTHÉ, M., YURKOWSKI, D.J. & MALLORY, M.L. 2020. First insights into Thayer’s Gull Larus glaucoides thayeri migratory and overwinter patterns along the Northeast Pacific coast . . . 9
DUCKWORTH, J., O’BRIEN, S., VÄISÄNEN, R., LEHIKOINEN, P., PETERSEN, I.K., DAUNT, F. & GREEN, J.A. 2020. First biologging record of a foraging Red-throated Loon Gavia stellata shows shallow and efficient diving in freshwater environments . . 17
RAINE, A.F., ANDERSON, T., DRISKILL, S. & TIPPIN, T. 2020. Assessing the breeding phenology of the White-tailed Tropicbird Phaethon lepturus dorotheae on the island of Kaua‘i, Hawai‘i, using fledgling fallout data . . . 23
RAMÍREZ-GAROFALO, J.R. 2020. Occurrence and implications of staging Black Scoters Melanitta americana in a heavily trafficked urban estuary . . . 27
VAN DEN HOFF, J. 2020. Environmental constraints on the breeding phenology of Giant Petrels Macronectes spp., with emphasis on Southern Giant Petrels M. giganteus . . . 33
WHITWORTH, D.L., CARTER, H.R., PALACIOS, E. & GRESS, F. 2020. At-sea congregation surveys to assess the status of Scripps’s Murrelets Synthliboramphus scrippsi at islands off western Baja California, Mexico in 2002−2008 . . . 41
IQBAL, M., ABDILLAH, H., FEBRIANTO, I., AMRUL, H.M., WINDUSARI, Y. & HANUM, L. 2020. Recent status of Black-headed Gull Chroicocephalus ridibundus in Sumatra, Indonesia . . . 53
HAYES, F.E. & HAYWARD, J.L. 2020. Nocturnal copulation in Glaucous-winged Gulls Larus glaucescens . . . 55
TANEDO, S.A. & HOLLMÉN, T.E. 2020. Refining remote observation techniques to estimate productivity of Black-legged Kittiwakes Rissa tridactyla in Resurrection Bay, Gulf of Alaska . . . 61
ZARN, A.M., VALLE, C.A., BRASSO, R., FETZNER, W. & EMSLIE, S.D. 2020. Stable isotope and mercury analyses of the Galapagos Islands seabird community . . . 71
SCARELLI, A.C.S., MENEGALDO, I., TADEU, A.D., BALDASSIN, P., SHIMODA, E., SILVA, F.F. & WERNECK, M.R. 2020. Hematological and biochemical analyses of Magnificent Frigatebird Fregata magnificens found on the coast of the state of Rio de Janeiro, Brazil . . . 81
JIMÉNEZ, E.S., JIMÉNEZ-UZCÁTEGUI, G., EGAS, D.A., SOLIS, N., CARRERA-JÁTIVA, P., VINUEZA, R.L., COTÍN, J., NIETO, A., GARCÍA, C., SEVILLA, C. & RUEDA, D. 2020. Trace metals (Hg, Pb, and Cd) in feathers of four Galapagos waterbird species . . . 85
MONDRETI, R., DAVIDAR, P., RYAN, P.G., THIEBOT, J.B. & GREMILLET, D. 2020. Seabird and cetacean occurrence in the Bay of Bengal associated with marine productivity and commercial fishing effort . . . 91
MAYNARD, L.D. & DAVOREN, G.K. 2020. Inter-colony and interspecific differences in the isotopic niche of two sympatric gull species in Newfoundland . . . 103
ALMEIDA, G.G., SAMPAIO-E-SILVA, T.A. & SILVA-MATOS, D.M. 2020. Influence of the invasive grass Urochloa decumbens on nest-site selection by the Brown Booby Sula leucogaster on Castilho Island, Brazil . . . 111
DAS, D.K., GALIB, A.J., KHANDAKAR, N., ROHMAN, M.H., & REZA, A.H.M.A. 2020. Activity budget of wintering Indian Skimmer Rynchops albicollis at Damar Char, Bangladesh . . . 119
WAGGITT, J.J., TORRES, R. & FRASER, S. 2020. Foraging seabirds respond to an intermittent meteorological event in a coastal environment . . . 125
RENNIE, I.R.F., GREEN, D.J., KREBS, E.A. & HARFENIST, A. 2020. High apparent survival of Leach’s Storm Petrels Oceanodroma leucorhoa in British Columbia . . . 133
REVIEWS BINLEY, A.D. & VINCENT, J.G. Bird Therapy (Harkness) . . . 141
GOOD, T.P. Gulls Simplified: A Comparative Approach to Identification (Dunne & Carlson) . . . 142
LACHMANN, L. Moral Entanglements—Conserving Birds in Britain and Germany (Bargheer) . . . 142
ORBEN, R.A. Vast Expanses: A History of the Oceans (Rozwadowski). . . 144
INSTRUCTIONS TO AUTHORS . . . 145
