Engel, S.; Biebach, H.; Visser, G. H.: Metabolic costs of avian flight in relation to flight velocity: A study in Rose Coloured Starlings (Sturnus roseus, Linnaeus). Journal of Comparative Physiology B-Biochemical Systemic and Environmental Physiology 176 (5), pp. 415 - 427 (2006)

Engel, S.; Klaassen, R. H. G.; Klaassen, M.; Biebach, H.: Exhaled air temperature as a function of ambient temperature in flying and resting ducks. Journal of Comparative Physiology B-Biochemical Systemic and Environmental Physiology 176 (6), pp. 527 - 534 (2006)

Engel, S.; Suthers, R. A.; Biebach, H.; Visser, G. H.: Respiratory water loss during rest and flight in European Starlings (Sturnus vulgaris). Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology 145 (4), pp. 423 - 432 (2006)

Fernández-Santiago, R.; Sharma, M.; Mueller, J. C.; Gohlke, H.; Illig, T.; Anneser, J.; Münch, C.; Ludolph, A.; Kamm, C.; Gasser, T.: Association between the vascular endothelial growth factor (VEGF) gene and amyotrophic lateral sclerosis (ALS): Possible gender-dependent effect. Neurology 66 (12), pp. 1929 - 1931 (2006)

Fessl, B.; Kleindorfer, S.; Tebbich, S.: An experimental study on the effects of an introduced parasite in Darwin’s finches. Biological Conservation 127 (1), pp. 55 - 61 (2006)

Fessl, B.; Sinclair, B. J.; Kleindorfer, S.: The life-cycle of Philornis downsi (Diptera: Muscidae) parasitizing Darwin's finches and its impacts on nestling survival. Parasitology 133 (6), pp. 739 - 747 (2006)

Fiedler, W.; Koeppen, U.; Geiter, O.: Meldungen aus den Beringungszentralen. Vogelwarte - Zeitschrift für Vogelkunde 44 (3), pp. 199 - 202 (2006)

Fiedler, W.; Koeppen, U.; Geiterl, O.: Meldungen aus den Beringungszentralen. Vogelwarte - Zeitschrift für Vogelkunde 44 (2), p. 141 - 141 (2006)

Foerster, K.; Valcu, M.; Johnsen, A.; Kempenaers, B.: A spatial genetic structure and effects of relatedness on mate choice in a wild bird population. Molecular Ecology 15 (14), pp. 4555 - 4567 (2006)

Förschler, M. I.: Absence of insular density inflation in Corsican Finches Carduelis citrinella corsicanus. Acta Ornithologica 41 (2), pp. 171 - 175 (2006)

Förschler, M. I.: Starker Bestandsrückgang beim Zitronenzeisig Carduelis citrinella an nachbrutzeitlichen Sammelplätzen im Nordschwarzwald. Vogelwarte - Zeitschrift für Vogelkunde 44 (1), pp. 17 - 21 (2006)

Förschler, M. I.; Borras, A.; Kalko, E. K. V.; Cabrera, J.; Cabrera, T.; Carlos Senar, J.: Inter-locality variation in breeding phenology and nesting habitat of the citril finch Carduelis citrinella in the Catalonian Pre-Pyrenees. Ardeola 53 (1), pp. 115 - 126 (2006)

Förschler, M. I.; Foerschler, L.; Dorka, U.: Population fluctuations of siskins Carduelis spinus, common crossbills Loxia curvirostra, and citril finches Carduelis citrinella in relationship to flowering intensity of spruce Picea abies. Ornis Fennica 83 (2), pp. 91 - 96 (2006)

Förschler, M. I.; Kalko, E. K. V.: Breeding ecology and nest site selection in allopatric mainland Citril Finches Carduelis citrinella citrinella and insular Corsican Finches Carduelis citrinella corsicanus. Journal of Ornithology 147 (4), pp. 553 - 564 (2006)

Förschler, M. I.; Kalko, E. K. V.: Macrogeographic variations in food choice of mainland citril finches Carduelis (citrinella) citrinella versus insular Corsican (citril) finches Carduelis (citrinella) corsicanus. Journal of Ornithology 147 (3), pp. 441 - 447 (2006)

Förschler, M. I.; Kalko, E. K. V.: Age-specific reproductive performance in citril finches Carduelis citrinella. Ardea 94 (2), pp. 275 - 279 (2006)

Forstmeier, W.; Hasselquist, D.; Bensch, S.; Leisler, B.: Does song reflect age and viability? A comparison between two populations of the great reed warbler Acrocephalus arundinaceus. Behavioral Ecology and Sociobiology 59 (5), pp. 634 - 643 (2006)

Fusani, L.; Gahr, M.: Hormonal influence on song structure and organization: The role of estrogen. Neuroscience 138 (3), pp. 939 - 946 (2006)

Garcia-Moreno, J.; Cortes, N.; Garcia-Deras, G. M.; Hernandez-Banos, B. E.: Local origin and diversification among Lampornis hummingbirds: A Mesoamerican taxon. Molecular Phylogenetics and Evolution 38 (2), pp. 488 - 498 (2006)

Gheorghe, I. F.; Valcu, C.-M.; Barbu, I.; Ţopa, S.: Non-destructive methods for peat layer assessment in oligotrophic peat bogs: A case study from Poiana Ştampei, Romania. Acta Societatis Botanicorum Poloniae 75 (2), pp. 157 - 163 (2006)