Geographical Aspects of Bird-Flower Coevolution, with Particular Reference to Central America

Principles of Pollination Ecology

1979 • 3,598 citations

POLLEN-OVULE RATIOS: A CONSERVATIVE INDICATOR OF BREEDING SYSTEMS IN FLOWERING PLANTS

1977 • 1,406 citations

Parrots of the World

1973 • 644 citations

The Concept of r- and K-Selection: Evidence from Wild Flowers and Some Theoretical Considerations

1972 • 614 citations

The Foraging Specializations of Individual Bumblebees

1976 • 599 citations

Energetics and Pollination Ecology

1972 • 587 citations

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

1975 • 554 citations

BREEDING SYSTEMS OF TREE SPECIES OF A LOWLAND TROPICAL COMMUNITY

1974 • 513 citations

Pollen dispersal and optimal outcrossing in Delphinium nelsoni

1979 • 478 citations

Energetics of Pollination

1975 • 470 citations

Community Organization Among Neotropical Nectar-Feeding Birds

1978 • 442 citations

Organization of a Tropical Guild of Nectarivorous Birds

1976 • 357 citations

Ecological consequences of a coevolved mutualism between butterflies and plants

1975 • 335 citations

The Principles of Pollination Ecology.

1967 • 321 citations

Ecological Organization of a Tropical, Highland Hummingbird Community

1976 • 305 citations

Convergence, Competition, and Mimicry in a Temperate Community of Hummingbird‐Pollinated Flowers

1979 • 287 citations

Ecological Interactions between Plants and Hummingbirds in a Successional Tropical Community

1978 • 251 citations

Breeding Systems of Tree Species of a Lowland Tropical Community

1974 • 232 citations

The visual pigments, oil droplets and spectral sensitivity of the pigeon

1977 • 231 citations

A New Dictionary of Birds

1965 • 230 citations

Hummingbirds and Their Flowers.

1969 • 219 citations

Propagule Size, Number, and Dispersion Pattern in Ambystoma and Asclepias

1977 • 217 citations

Hummingbirds See Near Ultraviolet Light

1980 • 207 citations

Nectar Characteristics and food selection by hummingbirds

1976 • 202 citations

Nonrandom Foraging by Sunbirds in a Patchy Environment

1977 • 200 citations

Pollination by Lemurs and Marsupials: An Archaic Coevolutionary System

1978 • 198 citations

Ecological and Behavioral Determinants of Pollen Dispersal in Hummingbird- Pollinated Heliconia

1973 • 193 citations

Ecological and Evolutionary Implications of Bird Pollination

1978 • 192 citations

Birds of the world

1929 • 188 citations

Feeding Niches of Hummingbirds in a Trinidad Valley

1972 • 182 citations

Birds as pollinators of Australian plants

1979 • 181 citations

A guide to the birds of Venezuela

1977 • 180 citations

The Feeding Ecology of Tanagers and Honeycreepers in Trinidad

1971 • 179 citations

Plant-Pollinator Interactions in Hawaii: Pollination Energetics of Metrosideros Collina (Myrtaceae)

1976 • 172 citations

Temporal Organization of Flowering Among the Hummingbird Foodplants of a Tropical Wet Forest

1978 • 167 citations

Bat Activity and Pollination of Bauhinia Pauletia: Plant‐Pollinator Coevolution

1974 • 161 citations

Foraging Efficiencies and Time Budgets in Nectar-Feeding Birds

1975 • 158 citations

Energy Allocations in Annual and Perennial Lupines (lupinus: Leguminosae)

1977 • 152 citations

Competition and Coexistence in a Simple Tropical Community

1973 • 149 citations

Hummingbird Territoriality at a Tropical Flowering Tree

1970 • 146 citations

The Birds of Costa Rica, Distribution and Ecology

1965 • 143 citations

Seasonal Movements in the Australian Honeyeaters (Meliphagidae) and Their Ecological Significance

1968 • 140 citations

WHY ARE BIRD‐VISITED FLOWERS PREDOMINANTLY RED?

1972 • 140 citations

Hummingbirds and their Flowers.

1970 • 132 citations

The Function of Torpor in Hummingbirds

1977 • 131 citations

Food Supply and the Annual Cycle of the Anna Hummingbird

1975 • 126 citations

Pollination by Birds of Native Plants in South Australia

1977 • 125 citations

Adaptations for Food-Getting in the American Blackbirds

1951 • 124 citations

Why Do Hummingbird Flowers Secrete Dilute Nectar?

1978 • 122 citations

Energetics of Foraging: Rate and Efficiency of Nectar Extraction by Hummingbirds

1972 • 122 citations

RELATIONSHIPS BETWEEN HUMMINGBIRDS AND FLOWERS IN THE ANDES OF COLOMBIA

1980 • 107 citations

The Impact of Seasonal Flowering on the Biology of Some Tropical Hummingbirds

1970 • 103 citations

Correlates and Consequences of Body Size in Nectar-Feeding Birds

1978 • 101 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

Annual cycle, environment and evolution in the Hawaiian honeycreepers (Aves: Drepaniidae)

1953 • 92 citations

A Spectrum of Nectar-Eater Communities

1978 • 90 citations

EVOLUTION OF PAIR COOPERATION IN A TROPICAL HUMMINGBIRD

1970 • 75 citations

Observations on pollen harvesting by brush-tongued lorikeets

1970 • 69 citations

SPATIAL RELATIONSHIPS BETWEEN STAMINATE AND PISTILLATE PLANTS OF DIOECIOUS TROPICAL FOREST TREES

1977 • 65 citations

On the Biology of some Javanese Loranthaceae and the role birds play in their life-historie

1954 • 65 citations

Aspects of the Pollination Biology of Three Erythrina Species on Trinidad and Tobago

1979 • 62 citations

Competition for the Nectar of Centropogon valerii by the Hummingbird Colibri thalassinus and the Flower-Piercer Diglossa plumbea, and Its Evolutionary Implications

1974 • 61 citations

Resource partitioning and competition in honeyeaters of the genus Meliphaga

1976 • 60 citations

Ecology and Evolution of the Sympatric Mascarene White-Eyes, Zosterops borbonica and Zosterops olivacea

1971 • 57 citations

The Value of Insects and Nectar to Honeyeaters

1976 • 56 citations

Oriole pollination ofErythrina breviflora (Leguminosae): Evidence for a polytypic view of ornithophily

1977 • 55 citations

Ecology of Co-Existing White-Cheeked and New Holland Honeyeaters

1977 • 55 citations

LEK BEHAVIOUR AND BREEDING OF GUY'S HERMIT HUMMINGBIRD PHAETHORNIS GUY

1974 • 54 citations

Competitive Relationships between Parula Warblers and Other Species during the Breeding Season

1967 • 54 citations

A Montane Hummingbird Territorial System in Oaxaca, Mexico

1976 • 50 citations

Ecology and evolution of an Andean hummingbird (Oreotrochilus estella)

1976 • 50 citations

Effective Pollination of Erythrina Fusca by the Orchard Oriole (Icterus Spurius): Coevolved Behavioral Manipulation?

1979 • 47 citations

Comparative Foraging Efficiencies of Some Montane Sunbirds in Kenya

1978 • 42 citations

Exploitation of Nectar Resources by Hummingbirds, Bees (Bombus), and Diglossa baritula and Its Role in the Evolution of Penstemon kunthii

1971 • 42 citations

Life Histories of Hermit Hummingbirds

1964 • 39 citations

Sharing of Habitat by Three Congeneric Honeyeaters

1971 • 39 citations

Assortative Pollination by Red Wattlebirds in a Hybrid Population of Anigozanthos Labill. (Haemodoraceae)

1978 • 38 citations

NICHE OVERLAP IN FEEDING ASSEMBLAGES OF NEW GUINEA BIRDS

2016 • 38 citations

Experimental studies of foraging in complex laboratory environments

1978 • 31 citations

THE BIOLOGY OF THE CAPE SUGARBIRD PROMEROPS CAFER (L.)

1959 • 28 citations

Evolution of Pair Cooperation in a Tropical Hummingbird

1970 • 28 citations

On the Tongues of Sunbirds

1976 • 27 citations

Breeding Seasons of Hummingbirds near Santa Barbara, California

1951 • 24 citations

INTER‐SPECIFIC RELATIONS BETWEEN SOME ANDEAN BIRDS

1963 • 21 citations

GURNEY'S SUGARBIRD, PROMEROPS GURNEYI VERREAUX, IN THE NATAL DRAKENSBERG

1963 • 19 citations

Untersuchungen über die hormonale Beeinflußbarkeit der Farbbevorzugung von Feuerwebern(Euplectes orix franciscanus)

1970 • 3 citations

Deleted Work

1955 • 0 citations