The weather changed – Locked-down, locked-up, locked-in, locked-away all applied to the effects of the weather at the beginning of the month and the abilities to get out into the wider world from our homes. The 2nd June was the hottest day of the year but from then on, the weather disintegrated into rain and lots of it. Then, more hottest days at the end of the month.
A press release sent out publicising our NatHistCam project and Paul Rule’s remarkable total of 573 species identified in his Cambridge garden received airplay on Radio Cambridgeshire, then on the BBC’s web site and then a two-minute mention on Spring Watch on 4th June. https://www.bbc.co.uk/news/uk-england-cambridgeshire-52840241
The latest Cambridgeshire Bird Club (CBC) monthly (May) bulletin continues with a list of nocturnal migrants sound recorded and identified in May. The species list includes: Little-ringed Plover, Common Sandpiper (7), Whimbrel (7), Bar-tailed Godwit, Tree Pipit (2) and adds to the remarkable story of night time migration over our City.
On 1st June two male Yellowhammers were singing in Trumpington Meadows, Small Blue butterflies were about and the clump of gorse near the bridge over the M11 had finally stopped flowering – more about this below! Also, on 1st June a Whitethroat was singing in my small Chesterton garden – I suspect it was the Logan’s Meadow bird I saw in May – but it soon headed off towards the recreation ground. On 2nd June a young Peregrine – with down on the top of its head – perched on the parapet near the nest site surveying the city life below while the male bird kept a noisy watch above. Two fledged birds were seen on 11th June.
The Cambridge Independent (June 17-23, 2020) had an article describing how two of the three chicks had fallen from the nest site and were recovered and cared for by the Raptor Foundation, based near St Ives, and were then reunited with the parents. The second site in the City had three youngsters.
On 3rd June a Hobby was reported over the Chesterton allotments. The Common Terns have been in evidence along Riverside this year, one was near Victoria Road bridge on 5th and a bird was fishing at Riverside on 19th and there were more regular sightings to the end of the month. On 10th and 15th June up to four Corn Bunting were singing at Hobson’s Park and a flock of 40+ Stock Doves were in the area set aside for allotments. The Great-crested Grebe’s nest looked as though it had been predated by the patient Lesser-black backed Gull seen close-by in May and lots of juvenile Black-headed Gulls were about and all appeared as competently aggressive as the parent birds! A Little Egret was stalking the pond next to Long Road bridge.
Stonechats are a conundrum! They are often present in apparently suitable nesting sites such as Hobson’s Park and Trumpington Meadows up to the end of March but then they disappear. I think the key to nesting Stonechats is Gorse. There are at least two small areas of Gorse in our project area, next to the M11 bridge at Trumpington Meadows and at Hobson’s Park but both are probably too small to sustain nesting Stonechats. This gorse was possibly brought in as seeds in builders’ sand. Visit the Suffolk coastal gorse heaths and there are the breeding Stonechats – find the Stonechats and close by there are often Dartford Warblers.
On 11th June 62 Carrion Crows were hanging around not-so-isolating groups of picnickers on Parker’s Piece.
No-mow-May has resulted in Pyramidal Orchids in a front garden lawn in Huntingdon Road and Pyramidals and Bee Orchids in a small wayside verge at Addenbrooke’s and has encouraged the City Council to leave a weedy headland round Chesterton Recreation ground – thank you! At Hobson’s Park on 15th June a Black-headed Gull was perched in a tree! and two parent birds were tragically protecting their drowned chick from the mayhem of the colony and voracious lunging adult gulls after carrion.
Lots of Skylarks are still singing at Trumpington Meadows, Hobson’s Park and the development areas round the periphery of Darwin Green and Eddington. Nearby on 20th June at a farm site in the north of our project area three pairs of Yellowhammers were active, a pair of Yellow Wagtails were probably breeding and the new kestrel box had been taken over by a roosting Barn Owl.
A fantastic record of a Bee-eater, heard (only) over Nuttings Road on 21st June (Iain Webb, www.cbcwhatsabout.blogspot.com). At Logan’s Meadow on 25th June four Blackcaps, three Whitethroats and a Chiffchaff were still singing, +/- six pairs of Swifts were nesting in the Tower and Jon Heath recorded a Siskin over his garden (cbcwhatsabout.blogspot.com) on 26th June.
Woodpigeons are part of our avian background that are rarely noted unless in huge flocks. I usually end up checking distant lone Woodpigeons in flight for a raptor at least 10-12 times a day when out birdwatching – usually for a possible Sparrowhawk (I often keep a count!). Birds have no problem – I do! From the late 1970’s when growing winter sown Oil Seed Rape (OSR) expanded as part of winter farm crop rotations the population of Woodies exploded – c150% increase between late 1970’s – 2010. OSR was a food source that guaranteed pigeons’ winter survival. As a result, Woodpigeons moved into our towns and cities to breed where lawns, parks and gardens offer them a food supply during the breeding season as OSR crops grew too tall on which to feed. There is a nest in my neighbour’s eucalyptus tree (the first was blitzed by Magpies).
Then came the crunch. Cabbage Stem Flea Beetle (CSFB) became a devastating pest of OSR seedlings due to repeated planting in winter crop rotations, destroying germinating seedlings and forcing a reduction of 10% in winter drilled OSR in autumn 2019.
It was the widespread use of systemic neonicotinamide insecticides (“neonics”) to kill CSFB that many blame for the dramatic decline in our insect biodiversity.
As I left home early on the 9th June to do a bird survey in the Great Fen Project south of Yaxley, near Peterborough there were 12 Woodies sitting in the middle of my road – true townies! My survey took two and a half hours in deep countryside – real Woodpigeon country and I only saw three Woodies! They do migrate. My oldest bird book by David Seth-Smith – Birds of our Country and Empire – says: “The Wood-pigeon remains here all year round but swarms of foreign specimens come from the north in the autumn.” A paper in a recent Holme Bird Observatory’s annual report described autumn/early winter influxes of Woodpigeons from the continent. Perhaps we should observe Wood Pigeons more closely.
Last record for the month: a Silver-washed Fritillary found in Huntingdon Road on 30th June was probably brought in on the strong winds.
Bob Jarman 30th June 2020.