A BUMPER hawthorn berry crop this autumn – the biggest since records began 20 years ago – is bringing a big boost for wildlife, according to a conservation charity.
Hedgerows and woodland across the nation are awash with the red berries which nature experts at the Woodland Trust are describing as one of the biggest ever crops.
Nature’s Calendar recorders have sent in reports with this year’s crop being given 4.2 on the fruit scale – deemed as “exceptional”. This takes in dozens of records where hawthorns are judged on the abundance of their berries, also known as haws.
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The Nature’s Calendar team has been reporting on this for the last 20 years, and with records still coming in, it’s the largest fruit score ever (equalled only in 2014).
Dr Judith Garforth, the Woodland Trust’s citizen science officer, said: “This is really good autumn news for wildlife. Haws are eaten by migrating birds such as redwings, fieldfares and thrushes as well as small mammals.
“The fruit score is really important as it provides an indicator of winter food availability for wildlife, as well as the seed source available for natural regeneration of trees and shrubs, it’s often linked to climate variables in preceding seasons.”
The Nature’s Calendar team puts the exceptional crop down to a mild spring where temperatures hovered above average. This is when the white hawthorn flowers bloom which, if pollinated, go on to produce the red fruits in autumn.
Nature’s Calendar volunteers also record the date that hawthorn flowers first start to open in spring. The data shows that the UK average date of first flowering of hawthorn was 1 May this year.
This was perfect timing for its common name the ‘May tree’. The warm dry weather in May was ideal for pollinating insects.
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Whilst Dr Garforth celebrated the news, she cautioned that a shortage of volunteer recorders could put such record gathering at risk.
She added: “We desperately need more recorders to deliver such data which is so important for tracking the nation’s seasons."
Visit naturescalendar.woodlandtrust.org.uk to find out more about being a recorder.
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