This is a scene that breeds quickly.
They will soon be flying back north to breed quickly in the short Arctic summer.
Their ability to breed quickly allows their populations to stabilize well after frequent crashes caused by the drought-flood cycles.
With a good supply of whitetail, they should breed quickly and overrun the counties in just a few years.
But they breed quickly, lack predators apart from humans, and are superbly adapted to life in the British countryside.
But the insects breed quickly in stagnant water, and the uncovered barrels, buckets, discarded tires, and ditches common in densely populated urban areas make for perfect mosquito habitat.
Adrian Hibbert, from Denbighshire county council countryside service, said the little terns were one of the species "most vulnerable" to climate change, with the beaches they need to breed quickly becoming unsuitable because of rising seas and floods.
As environmental scientist Hong Liu of Beihang University in Beijing and colleagues explained online 24 December in Advances in Space Research, the insects breed quickly, require little space and water, and generate only small amounts of excrement, which could serve as fertilizer.
"If we don't sort out the problem of antibiotic resistance then these wonderful medical advances that we take for granted now - 21st Century medicine - hip replacements, cancer chemotherapy - they're not going to be possible, because patients are succumbing to infections that were previously treatable". Bacteria breed quickly, and in ways that can surprise the experts.
Turkeys don't breed quickly enough, for example, so are sometimes artificially inseminated.
