Category Archives: Butterflies

Letting grass grow long boosts butterfly numbers, UK study proves

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Analysis of 60o gardens shows wilder lawns feed caterpillars and create breeding habitat

Good news for lazy gardeners: one labour-saving tweak could almost double the number of butterflies in your garden, according to a new scientific study – let the grass grow long.

In recent years nature lovers have been extolling the benefits of relaxed lawn maintenance with the growing popularity of the #NoMowMay campaign. Now an analysis of six years of butterfly sightings across 600 British gardens has provided the first scientific evidence that wilder lawns boost butterfly numbers.

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Monarch butterfly numbers dip to second lowest level in Mexico wintering grounds

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Experts say the endangered insect numbers fell by 59% this year, blaming pesticide use and climate change for the reduction

The number of endangered monarch butterflies at their wintering areas in Mexico has dropped by 59% this year to the second lowest level since record keeping began, experts said, blaming pesticide use and climate change.

The annual butterfly count doesn’t calculate the individual number of butterflies, but rather the number of hectares they cover when they clump together on tree branches in the mountain pine and fir forests west of Mexico City. Monarchs from east of the Rocky Mountains in the US and Canada overwinter there.

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Butterfly loved by Churchill back in England after almost 100 years

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Black-veined whites, thought to have died out in 1920s, have seemingly returned due to warmer climate

When they last roamed England in 1925, they counted Winston Churchill as a fan. Now, black-veined whites – an extremely rare species of British butterfly – have been spotted fluttering once again.

Small numbers of the black and white insects have been spotted in fields and hedgerows in south-east London, nearly a century after the species was thought to have become extinct in the UK.

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EU environmental watchdog criticises calls to stall pesticides cut

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European Environment Agency says Ukraine crisis cannot be used to justify delay

The EU’s environmental watchdog has hit back at calls to stall a 50% cut in the use and risks of synthetic pesticides and a 20% cut in fertiliser use by 2030, arguing that the Ukraine crisis provides scant justification for delay.

EU states with the backing of powerful farm unions and centre-right parties have blocked the proposed pesticide reform unless the European Commission completes a second impact study by 28 June to assuage food security fears.

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Large blue butterfly numbers soar in Britain

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Endangered species enjoys best summer in 150 years thanks to habitat restoration scheme

The large blue butterfly has enjoyed its best summer for 150 years in Britain thanks to targeted restoration work, which is also benefiting other rare insects including the rugged oil beetle and the shrill carder bee.

The butterfly, which became extinct in Britain in 1979 but was reintroduced via caterpillars from Sweden four years later, flew in its greatest numbers in June this year since records began.

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Big Butterfly Count in UK begins with eyes on declining numbers

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Citizen science survey should aid knowledge of populations, including that of small tortoiseshell ‘missing’ from buddleias

The apparent alarming absence of butterflies feeding on buddleia flowers this summer will be tested by the launch of the world’s largest insect survey.

People are being urged to take part in the Big Butterfly Count today to help discover if anecdotal reports of a lack of butterflies reflect a wider reality across Britain this summer.

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Half of UK’s butterfly species vulnerable to extinction as five join red list

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Time is running out to save 58 resident species, Butterfly Conservation warns

Half of Britain’s butterfly species are now listed as threatened with extinction after five more joined the new “red list” of endangered butterflies.

The increase in the number of species listed as “vulnerable” from nine in 2011 to 16 today is a warning that time is running out to save the 58 resident species, according to Butterfly Conservation, which compiled the red list from scientific monitoring data according to the criteria set out by the International Union for Conservation of Nature (IUCN).

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Monarch butterflies bounce back in Mexico wintering grounds

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Experts say 35% rise in acreage covered by migratory insects my reflect adaptation to changing climate

Mexican experts have said that 35% more monarch
butterflies arrived this year to spend the winter in mountaintop forests, compared with the previous season.

Experts say the rise may reflect the butterflies’ ability to adapt to more extreme bouts of heat or drought by varying the date when they leave Mexico.

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The insect apocalypse: ‘Our world will grind to a halt without them’

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Insects have declined by 75% in the past 50 years – and the consequences may soon be catastrophic. Biologist Dave Goulson reveals the vital services they perform

I have been fascinated by insects all my life. One of my earliest memories is of finding, at the age of five or six, some stripy yellow-and-black caterpillars feeding on weeds in the school playground. I put them in my empty lunchbox, and took them home. Eventually they transformed into handsome magenta and black moths. This seemed like magic to me – and still does. I was hooked.

In pursuit of insects I have travelled the world, from the deserts of Patagonia to the icy peaks of Fjordland in New Zealand and the forested mountains of Bhutan. I have watched clouds of birdwing butterflies sipping minerals from the banks of a river in Borneo, and thousands of fireflies flashing in synchrony at night in the swamps of Thailand. At home in my garden in Sussex I have spent countless hours watching grasshoppers court a mate and see off rivals, earwigs tend their young, ants milk honeydew from aphids, and leaf-cutter bees snip leaves to line their nests.

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‘A cause for worry’: Mexico’s monarch butterflies drop by 26% in year

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Butterflies had bad year after four times as many trees were lost to illegal logging and extreme climate conditions

The number of monarch butterflies that reached their winter resting grounds in central Mexico decreased by about 26% this year, and four times as many trees were lost to illegal logging, drought and other causes, making 2020 a bad year for the butterflies.

The butterflies’ population covered only 2.1 hectares (5.2 acres) in 2020, compared to 2.8 hectares (6.9 acres) the previous year and about one-third of the 6.05 hectares (14.95 acres) detected in 2018, according to government figures.

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Discovery of ‘cryptic species’ shows Earth is even more biologically diverse

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Excitement as DNA barcoding technique leads to unmasking of new species tempered with fear that some are already at risk of extinction

A growing number of “cryptic species” hiding in plain sight have been unmasked in the past year, driven in part by the rise of DNA barcoding, a technique that can identify and differentiate between animal and plant species using their genetic divergence.

The discovery of new species of aloe, African leaf-nosed bats and chameleons that appear similar to the human eye but are in fact many and separate have thrilled and worried conservationists. Scientists say our planet might be more biologically diverse than previously thought, and estimates for the total number of species could be far higher than the current best guess of 8.7 million. But cryptic discoveries often mean that species once considered common and widespread are actually several, some of which may be endangered and require immediate protection.

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Large blue butterfly flutters in Cotswolds for first time in 150 years

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Painstaking conservation effort to accommodate insect’s complex lifecycle pays off

The biggest reintroduction to date of the large blue has led to the rare butterfly flying on a Cotswold hillside where it has not been seen for 150 years.

About 750 butterflies emerged on to Rodborough Common in Gloucestershire this summer after 1,100 larvae were released last autumn following five years of innovative grassland management to create optimum habitat.

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Fear in Mexico as twin deaths expose threat to monarch butterflies and their defenders

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The deaths of two butterfly conservationists have drawn focus to a troubling tangle of disputes, resentments and violence

The annual migration of monarch butterflies from the US and Canada is one of the most resplendent sights in the natural world – a rippling orange-and-black wave containing millions of butterflies fluttering instinctively southward to escape the winter cold.

The spectacle when they reach their destination in central Mexico is perhaps even more astonishing. Patches of alpine forest turn from green to orange as the monarchs roost in the fir trees, the sheer weight of butterflies causing branches to sag to the point of snapping. Tens of thousands of the insects bounce haphazardly overhead, searching replenishment from nearby plants.

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Mexico: defender of monarch butterflies found dead two weeks after he vanished

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  • Homero Gómez González was found floating in a well
  • Activists say death could be over illegal logging disputes

A Mexican environmental activist who fought to protect the wintering grounds of the monarch butterfly has been found dead in the western state of Michoacán, two weeks after he disappeared.

Homero Gómez González, a former logger who managed El Rosario butterfly reserve, vanished on 13 January. His body was found floating in a well on Wednesday, reportedly showing signs of torture.

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Monarch butterfly population wintering in Mexico increases 144%

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Monarch production will not be replicated next year, experts warn, as above average temperatures will cause problems

The population of monarch butterflies wintering in central Mexico is up 144% over last year, according to new research.

Related: 'It's a sad reality': a troubling trend sees a 97% decline in monarch butterflies

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