Newly-emerged adult dragonflies, known as tenerals, are a pale green colour at first, with only hints of the final adult patterning. Their wings remain very reflective for a couple of days and the flight is weak and fluttery. As the body and wings harden off, they begin hunting for food whenever fine weather permits. They spend about a week, depending on the weather, feeding away from water and gradually acquire adult colouration and sexual maturity.
Adult dragonflies are most active between mid-morning and mid-afternoon, when temperatures are highest. In Britain, flight is generally restricted to sunny weather, when the flight muscles in the thorax are sufficiently warm. This is especially the case for species that spend most of their time perched. Alternatively, a tactic used by hawkers, especially females (allowing them to lay eggs during cooler weather), is to generate heat in the flight muscles by vibrating their wings. Generally, though, dragonflies seem to disappear in wet or cool cloudy conditions. In reality, they sit still and well hidden amongst vegetation, often hanging under leaves in trees.The life-expectancy of adults is short, typically no more than a week or two, but exceptionally 6–8 weeks.
Newly-emerged adult dragonflies, known as tenerals, are a pale green colour at first, with only hints of the final adult patterning. Their wings remain very reflective for a couple of days and the flight is weak and fluttery. As the body and wings harden off, they begin hunting for food whenever fine weather permits. They spend about a week, depending on the weather, feeding away from water and gradually acquire adult colouration and sexual maturity.Adult dragonflies are most active between mid-morning and mid-afternoon, when temperatures are highest. In Britain, flight is generally restricted to sunny weather, when the flight muscles in the thorax are sufficiently warm. This is especially the case for species that spend most of their time perched. Alternatively, a tactic used by hawkers, especially females (allowing them to lay eggs during cooler weather), is to generate heat in the flight muscles by vibrating their wings. Generally, though, dragonflies seem to disappear in wet or cool cloudy conditions. In reality, they sit still and well hidden amongst vegetation, often hanging under leaves in trees.The life-expectancy of adults is short, typically no more than a week or two, but exceptionally 6–8 weeks.
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Newly-emerged adult dragonflies, known as tenerals, are a pale green colour at first, with only hints of the final adult patterning. Their wings remain very reflective for a couple of days and the flight is weak and fluttery. As the body and wings harden off, they begin hunting for food whenever fine weather permits. They spend about a week, depending on the weather, feeding away from water and gradually acquire adult colouration and sexual maturity.
Adult dragonflies are most active between mid-morning and mid-afternoon, when temperatures are highest. In Britain, flight is generally restricted to sunny weather, when the flight muscles in the thorax are sufficiently warm. This is especially the case for species that spend most of their time perched. Alternatively, a tactic used by hawkers, especially females (allowing them to lay eggs during cooler weather), is to generate heat in the flight muscles by vibrating their wings. Generally, though, dragonflies seem to disappear in wet or cool cloudy conditions. In reality, they sit still and well hidden amongst vegetation, often hanging under leaves in trees.The life-expectancy of adults is short, typically no more than a week or two, but exceptionally 6–8 weeks.
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