Donald R Reynolds

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Honey bees (Apis mellifera) are regularly faced with the task of navigating back to their hives from remote food sources. They have evolved several methods to do this, including compass-directed "vector" flights and the use of landmarks. If these hive-centered mechanisms are disrupted, bees revert to searching for the hive, but the nature and efficiency of(More)
Little is known of the population dynamics of long-range insect migrants, and it has been suggested that the annual journeys of billions of nonhardy insects to exploit temperate zones during summer represent a sink from which future generations seldom return (the "Pied Piper" effect). We combine data from entomological radars and ground-based light traps to(More)
Insects migrating at high altitude over southern Britain have been continuously monitored by automatically operating, vertical-looking radars over a period of several years. During some occasions in the summer months, the migrants were observed to form well-defined layer concentrations, typically at heights of 200-400 m, in the stable night-time atmosphere.(More)
Over the past 30 years radar has emerged as an essential tool for investigating the migratory flight of insects at high altitude, providing, as it does, a unique means of measuring their altitudinal distribution, speed, and direction, and even their orientation (Riley, 1989; Reynolds, 1988). Until recently, however, it was not practicable to apply this(More)
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