Zur Abhängigkeit des Gesangs vom Nahrungsangebot beim Gelbbauchnektarvogel (Nectarinia venusta)

Angewandte Statistik

1974 • 557 citations

Ecology, Flowering Phenology, and Hummingbird Pollination of Some Costa Rican Heliconia Species

1975 • 554 citations

Economics of Feeding Territoriality in the Golden‐Winged Sunbird

1975 • 512 citations

TYPES OF NECTAR IN ANGIOSPERMS

1961 • 482 citations

Energy Metabolism, Thermoregulation and Body Temperature

1961 • 452 citations

Organization of a Tropical Guild of Nectarivorous Birds

1976 • 357 citations

Ecological Organization of a Tropical, Highland Hummingbird Community

1976 • 305 citations

Sugar Concentrations in Nectars from Hummingbird Flowers

1975 • 298 citations

Ecological Interactions between Plants and Hummingbirds in a Successional Tropical Community

1978 • 251 citations

Nectar Characteristics and food selection by hummingbirds

1976 • 202 citations

Nonrandom Foraging by Sunbirds in a Patchy Environment

1977 • 200 citations

Territorial responses to energy manipulations in the Anna hummingbird

1978 • 157 citations

Crop volume, nectar concentration and hummingbird energetics

1972 • 128 citations

Food Supply and the Annual Cycle of the Anna Hummingbird

1975 • 126 citations

On the tongue of a hummingbird: Its role in the rate and energetics of feeding

1973 • 99 citations

Foraging Strategies and Energetics of East African Sunbirds at Mistletoe Flowers

1975 • 98 citations

Energetics of nectar extraction in a small, high altitude, tropical hummingbird,Selasphorus flammula

1972 • 86 citations

Energy Intake and Expenditures in a Nectar-feeding Sunbird

1975 • 84 citations

Birds of West Central and Western Africa

1970 • 79 citations

Ordering of sequences of singing behaviour of mistle thrushes in relationship to timing

1963 • 78 citations

Food quality and foraging efficiency

1974 • 78 citations

EVOLUTION OF PAIR COOPERATION IN A TROPICAL HUMMINGBIRD

1970 • 75 citations

The Birds of West and Equatorial Africa

1954 • 75 citations

Territoriality and changes in resource use by sunbirds at Leonotis leonurus (Labiatae)

1980 • 53 citations

Foraging Efficiency and Parental Care in Colibri coruscans

1977 • 45 citations

Correlations between preening behaviour and foraging tendency in the honeybee

1969 • 42 citations

Territorial Defense against Hummingbirds and Insects by Tropical Hummingbirds

1978 • 29 citations

Field Guide to the Birds of the Eastern Himalayas

1977 • 23 citations

WELCHE GRÖßEN BEEINFLUSSEN DIE MENGE DER VON BIENEN UND WESPEN AN DER FUTTERQUELLE AUFGENOMMENEN ZUCKERLÖSUNG

1977 • 23 citations

A HIGH ALTITUDE HUMMINGBIRD ON THE VOLCANO COTOPAXI

1969 • 21 citations

FORAGING, SEASONALITY AND NESTING OF SEYCHELLES SUNBIRDS NECTARINIA DUSSUMIERI

1980 • 15 citations

THE GIANT HUMMINGBIRD PATAGONA GIGAS IN ECUADOR

1974 • 14 citations

Life History of the Scaly-Breasted Hummingbird

1964 • 12 citations

BREEDING CYCLES OF NECTARINIA PURPUREIVENTRIS AND SOME OTHER KIVU BIRDS

1959 • 8 citations

Zur Ökologie jamaikanischer Kolibriarten

1980 • 1 citations