Abstract
In our study, we assessed patterns of resource use in an assemblage of birds by observing their foraging behaviour from a crane in the canopy of a temperate alluvial forest. We selected 12 bird species and addressed seasonal changes in feeding activity during a 2-month period in spring focussing on average staying time and utilisation of crown strata in two tree species, the common oak (Quercus robur) and the sycamore maple (Acer pseudoplatanus). We further examined ecological characteristics of the trees (i. e., crown density) that are likely to influence resource use in birds. The selected birds differed in their preference for the tree species. Most birds preferred common oaks. This preference was probably associated with higher food abundance related to substrate characteristics (i.e., roughness of bark) which offer more microhabitats for arthropods and thus permit higher densities of potential prey. Some bird species switched feeding preferences within the study period from sycamore maples to common oaks in association with tree phenology. We found two main foraging techniques. All birds searched for prey at short distance (≤50 cm) and gleaned food from substrate except the Pied Flycatcher that foraged by hovering and searched over longer distances (>50 cm). Overall, we demonstrate in our study that canopy access with mobile crane systems provides excellent opportunities to observe canopy birds and enables detailed analysis of their foraging behaviour. The main result of our study reveals fine-grained resource partitioning of birds within the canopy as an important factor structuring assemblages, with species-specific and in part also seasonal differences in stratification and substrate use.
Similar content being viewed by others
References
Alatalo RV (1980) Seasonal dynamics of resource partitioning among foliage-gleaning passerines in Northern Finland. Oecologia 45:190–196
Alatalo RV, Moreno J (1987) Body size, interspecific interactions, and use of foraging sites in tits (Paridae). Ecology 68:1773–1777
Bibby CJ, Green RE (1980) Foraging behaviour of migrant pied flycatchers, Ficedula hypoleuca, on temporary territories. J Anim Ecol 49:507–521
Bibby CJ, Burgess ND, Hill DA (1995) Methoden der Feldornithologie. Neumann, Radebeul
Blume D, Tiefenbach J (1997) Die Buntspechte: Gattung Picoides. Westarp Wissenschaften, Magdeburg
Davison M, Jones BM (1997) Residence time in concurrent foraging with fixed times to prey arrival. J Exp Anal Behav 67:161–179
Dunning JB Jr (1990) Meeting the assumption of foraging models: an example using tests of avian patch choice. Stud Avian Biol 13:462–470
Feeny P (1970) Seasonal changes in oak leaf tannins and nutrients as a cause spring feeding by winter moth caterpillars. Ecology 51:565–581
Forstmeier W, Keßler A (2001) Morphology and foraging behaviour of Siberian Phylloscopus warblers. J Avian Biol 32:127–138
Gabbe AP, Robinson SK, Brawn JD (2002) Tree-species preferences of foraging insectivorous birds: implications for floodplain forest restoration. Conserv Biol 16:462–470
Glutz von Blotzheim UN, Bauer KM (1980) Handbuch der Vögel Mitteleuropas. Band 9. Aula, Wiebelsheim
Glutz von Blotzheim UN, Bauer KM (1993a) Handbuch der Vögel Mitteleuropas. Band 13/I. Aula, Wiebelsheim
Glutz von Blotzheim UN, Bauer KM (1993b) Handbuch der Vögel Mitteleuropas. Band 13/II. Aula, Wiebelsheim
Glutz von Blotzheim UN, Bauer KM (1993c) Handbuch der Vögel Mitteleuropas. Band 13/III. Aula, Wiebelsheim
Greenberg R (1981) The abundance and seasonality of forest canopy birds on Barro Colorado Island, Panama. Biotropica 13:241–251
Greenberg R, Gradwohl J (1980) Leaf surface specializations of birds and arthropods in a Panamanian forest. Oecologia 46:115–124
Hejl SJ, Verner J (1990) Within-season and yearly variations in avian foraging locations. Stud Avian Biol 13:202–209
Holmes RT, Robinson SK (1981) Tree species preferences of foraging insectivorous birds in a northern hardwoods forest. Oecologia 48:31–35
Holmes RT, Robinson SK (1988) Spatial patterns, foraging tactics, and diets of ground-foraging birds in a northern hardwoods forest. Wilson Bull 100:377–394
Holmes RT, Schultz JC (1988) Food availability for forest birds: effects of prey distribution and abundance on bird foraging. Can J Zool 66:720–728
Holmes RT, Bonney BE Jr, Pacala SW (1979) Guild structure of the Hubbard Brook bird community: a multivariate approach. Ecology 60:512–520
Hutto RL (1990) Studies of foraging behavior: central to understanding the ecology consequences of variation in food abundance. Stud Avian Biol 13:389–390
Kraft SK, Denno RF (1982) Feeding responses of adapted and non adapted insects to the defensive properties of Baccharis halimifolia L. (Compositae). Oecologia 52:156–163
Lehmann A (2004) Nahrungsökologie des Großen Buntspechtes—Forschungsergebnisse aus dem östlichen Münsterwald. LÖBF Mitteilungen 1:46–49
Mariani JM, Manuwal DA (1990) Factors influencing brown creeper (Certhia americana) abundance patterns in the southern Washington cascade range. Stud Avian Biol 13:427–430
Miranda B, Pasinelli G (2001) Habitatansprüche des Kleinspechts (Dendrocopos minor) in Wäldern der Nordost-Schweiz. J Ornithol 142:295–305
Moermond TC (1990) A functional approach to foraging: morphology, behavior, and the capacity to exploit. Stud Avian Biol 13:427–430
Morawetz W, Horchler PJ (2003) Leipzig canopy crane project (LAK), Germany. In: Basset Y, Horlyck V, Wright SJ (eds) Studying forest canopies from above: the international canopy crane network. Smithsonian Tropical Research Institute and UNEP, Panama, pp 79–85
Murakami M (2002) Foraging mode shifts of four insectivorous bird species under temporally varying resource distribution in a Japanese deciduous forest. Ornithol Sci 1:63–69
Murakami M, Nakano S (2000) Species-specific bird functions on a forest-canopy food web. Proc R Soc Lond B 267:1597–1601
Naef-Daenzer B, Keller LF (1999) The foraging performance of great and blue tits (Parus major and Cyanistes caeruleus) in relation to caterpillar development, and its consequences for nestling growth and fledgling weight. J Anim Ecol 68:708–718
Naka LN (2003) Structure and organization of canopy bird assemblages in Central Amazonia. Auk 121:88–102
Nicolai V (1985) Die ökologische Bedeutung verschiedener Rindentypen bei Bäumen. Dissertation. Universität Marburg, Marburg
Nilson T (1999) Inversion of gap frequency data in forest stands. Agric For Meteorol 98–99:437–448
Nyström KGK (1991) On sex-specific foraging behaviour in the willow Warbler, Phylloscopus trochilus. Can J Zool 69:462–470
Pasinelli G, Hegelbach J (1997) Characteristics of trees preferred by foraging middle spotted woodpecker Dendrocopos medius in northern Switzerland. Ardea 85:203–209
Pettersson B (1983) Foraging behaviour of the middle spotted woodpecker Dendrocopos medius in Sweden. Holarct Ecol 6:263–269
Robinson SK, Holmes RT (1982) Foraging behavior of forest birds: the relationships among search tactics, diet, and habitat structure. Ecology 63:1918–1931
Rosenberg KV (1990) Dead-leaf foraging specialization in tropical forest birds: measuring resource availability and use. Stud Avian Biol 13:360–368
Salewski V, Bairlein F, Leisler B (2002) Different wintering strategies of two Palaearctic migrants in West Africa—a consequence of foraging strategies? Ibis 144:85–93
Salewski V, Bairlein F, Leisler B (2003) Niche partitioning of two Palearctic passerine migrants with Afrotropical residents in their West African winter quarters. Behav Ecol 14:493–502
Shaw DC, Freeman EA, Flick C (2002) The vertical occurrences of small birds in an old-growth Douglas-fir-western hemlock forest stand. Northwest Sci 76:322–334
Shaw DC, Meinzer FC, Bible K, Parker GG (2003) Wind River Canopy crane research facility. In: Basset Y, Horlyck V, Wright SJ (eds) Studying forest canopies from above: the international canopy crane network. Smithsonian Tropical Research Institute and UNEP, Panama, pp 98–107
Smith JNM, Dawkins R (1971) The hunting behaviour of individual great tits in relation to spatial variations in their food density. J Anim Behav 19:695–706
Utschick H (2006) Baum- und Stratenpräferenzen nahrungssuchender Waldvogelarten in Waldbeständen unterschiedlicher Baumartenzusammensetzung. Ornithol Anz 45:1–20
Van Bael SA, Brawn JD (2005) The direct and indirect effects of insectivory by birds in two contrasting Neotropical forests. Oecologia 145:658–668
Walther BA (2002) Grounded ground birds and surfing canopy birds: variation of foraging stratum breadth observed in Neotropical forest birds and tested with simulation models using boundary constraints. Auk 119:658–675
Walther BA (2003) Why canopy access is essential to understand canopy birds: four examples from the Surumoni crane project. Ornithol Neotropical 15:41–52
Whelan CJ (2001) Foliage structure influences foraging of insectivorous forest birds: an experimental study. Ecology 82:219–231
Winkler H, Listabarth C (2003) Surumoni project, Venezuela. In: Basset Y, Horlyck V, Wright SJ (eds) Studying forest canopies from above: the international canopy crane network. Smithsonian Tropical Research Institute and UNEP, Panama, pp 126–132
Wright SJ (2002) Fort Sherman and Parque Metropolitano canopy cranes, Panama. In: Mitchell AW, Secoy K, Jackson T (eds) The global canopy handbook. Global Canopy Foundation, Oxford, pp 72–76
Acknowledgments
We dedicate this study to Wilfried Morawetz, founder of the LAK-project, former professor and head of the Botanical Institute (Biology 1) of the University of Leipzig, who, with his visionary ideas how to access the canopy as one of the last frontiers in ecological research, has created a unique research platform. Furthermore, we are grateful to all colleagues who helped during the study period and the data analysis. In particular, we thank Martin Unterseher, Franz Bairlein, Ophir Tal, Martin Pfeiffer and Marco Tschapka for support. Our study complies with the current laws of Germany.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by F. Bairlein.
Appendix
Appendix
See Table 9.
Rights and permissions
About this article
Cite this article
Böhm, S.M., Kalko, E.K.V. Patterns of resource use in an assemblage of birds in the canopy of a temperate alluvial forest. J Ornithol 150, 799–814 (2009). https://doi.org/10.1007/s10336-009-0401-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10336-009-0401-7