: Hanes Naturiol

The nest of Peregrine falcons in the clock tower appears to have failed, due to unknown causes sometime during the last week or so. However, after an absence of several days, both birds are showing renewed interest in the nest-site. Today has seen considerable activity with one bird visiting the nest several times and apparently busying itself tidying the interior while the other bird of the pair watched from close by. Although peregrines only have one brood each year, if the first brood is lost at an early stage they sometimes re-lay a second clutch, either in the original nest, or perhaps more often, at a nearby site. We now watch, wait and hope that a new clutch of eggs will be laid sometime in the near future and that these magnificent falcons will have more success the second time around.

Adrian Plant

It now looks that the breeding attempt by Peregrine Falcons in the clock tower has failed. All indications were that eggs were laid during late March and early April and if all had gone according to plan, they should have been hatching about now (eggs are usually incubated for 31-33 days). Unfortunately, no birds have been seen at the nest or perched nearby on the clock tower for several days now so it seems certain that the nest has been abandoned. We do not know why this breeding attempt has failed but the most likely cause is that the eggs have been eaten by predators, perhaps crows, ravens or gulls. Although peregrines only raise one brood each year it remains possible that the birds will make a second attempt to breed and we remain vigilant in case that happens.

Adrian Plant

Bydd Amgueddfa Cymru yn dyfarnu Tystysgrifau Gwyddonwyr Gwych i naw deg pump o ysgolion ar draws y DU eleni, i gydnabod eu cyfraniad i Ymchwiliad Bylbiau’r Gwanwyn – Newid Hinsawdd.

Llongyfarchiadau anferth i bob un o’r ysgolion! Mae rhestr o’r enillwyr isod, ydy’ch ysgol chi yno?

Diolch i bob un o’r 4200 disgybl a helpodd eleni! Diolch am weithio mor galed yn plannu, arsylwi, mesur a chofnodi – rydych chi i gyd yn Wyddonwyr Gwych! Bydd pob un yn derbyn tystysgrif a phensel Gwyddonydd Gwych, ac fe fyddan nhw’n cyrraedd eich ysgol tua canol mis Mai.

Diolch yn fawr i Ymddiriedolaeth Edina am eu nawdd ac am helpu i wireddu’r holl  broject!

Enillwyr 2014

Diolch i’r tri enillydd wnaeth anfon y nifer fwyaf o ddata tywydd.  Bydd pob un yn derbyn trip ysgol llawn hwyl i atyniad natur.

• Ysgol Clocaenog yng Nghymru
• Ysgol Gynradd Abronhill yn yr Alban
• Ysgol Gynradd Gymunedol Dallas Road yn Lloegr

Ail safle

Bydd pob ysgol yn derbyn tocyn anrheg i brynu offer ar gyfer eich projectau garddio.

• Ysgol Gynradd Cross Hands yng Nghymru
• Ysgol Gynradd Wormit yn yr Alban
• Ysgol Gynradd Gatholig y Cymun Bendigaid yn Lloegr

Clod uchel

Bydd pob ysgol yn derbyn tystysgrifau, pensiliau, hadau blodau’r haul a hadau perlysiau.

• Abergwili VC Primary
• Archbishop Hutton's Primary School
• Arkholme CE Primary School
• Balshaw Lane Community Primary School
• Bleasdale CE Primary School
• Burscough Bridge Methodist School
• Carnforth North Road Primary School
• Christchurch CP School
• Combe Primary School
• Coppull Parish Church School
• Cutteslowe Primary School
• Darran Park Primary
• Freuchie Primary School
• Gladestry C. in W. Primary
• Glyncollen Primary
• Kilmaron School
• Raglan VC Primary
• SS Philip and James CE Primary School
• St Athan Primary School
• St Blanes Primary School
• St Ignatius Primary School
• St Mary's Catholic Primary School, Leyland
• St Mellons Church in Wales Primary School
• St Michael's CE (Aided) Primary School
• St Nicholas Primary School
• St Patrick's Primary School
• Stanford in the Vale CE Primary School
• Ysgol Bro Eirwg
• Ysgol Deganwy

Cydnabyddiaeth arbennig

Bydd pob ysgol yn derbyn tystysgrifau, pensiliau a hadau blodau’r haul.

• Auchengray Primary School
• Britannia Community Primary School
• Cawthorne's Endowed Primary School
• Coleg Meirion-Dwyfor
• Culross Primary School
• Greyfriars RC Primary School
• Holy Trinity CE Primary School
• John Cross CE Primary School
• Llanishen Fach Primary School
• Red Marsh School
• St Anne's Catholic Primary School
• St Laurence CE Primary School
• Woodplumpton St. Anne's Primary School
• Ysgol Gynradd Dolgellau
• Ysgol Terrig
• Ysgol Y Plas

Ysgolion i dderbyn tystysgrifau

Bydd pob ysgol yn derbyn Tystysgrifau Gwyddonwyr Gwych a phensiliau.

• All Saints' CE Primary School
• Balcurvie Primary School
• Ballerup Nursery
• Blenheim Road Community Primary School
• Brockholes Wood Community Primary School
• Brynhyfryd Junior School
• Catforth Primary School
• Chatelherault Primary School
• Cleddau Reach VC Primary School
• Cobbs Brow Primary School
• Coed-y-Lan Primary School
• Flakefleet Primary School
• Glencairn Primary School
• Golden Hill School
• Henllys C/W Primary
• Hillside Specialist School
• Ladywell Primary School
• Lakeside Primary
• Lea Community School
• Manor Road Primary School
• Manor School
• Milford Haven Junior School
• Newport Primary School
• Pinfold Primary School
• RAF Benson Primary School
• Rogiet Primary School
• Rougemont Junior School
• Scotforth St Paul's CE Primary School
• St Bernadette's Primary School
• St Gregory's Catholic Primary School
• St John's CE Primary School
• St Nicholas C/W primary school
• Trellech Primary School
• Tynewater Primary School
• Woodstock CE Primary School
• Ysgol Bro Tawe
• Ysgol Glan Cleddau
• Ysgol Iau Hen Golwyn
• Ysgol Nant y Coed
• Ysgol Rhys Prichard
• Ysgol Santes Tudful
• Ysgol Sychdyn
• Ysgol Y Berllan Deg
• Ysgol Y Faenol

Cystadleuaeth Darlunio Cennin Pedr 2014

Llongyfarchiadau i’r disgyblion canlynol am greu darluniau botaneg arbennig! Gwobr yr enillwyr fydd pecynnau gwylio adar yn cynnwys binocwlars bach.

• 1af: Abbey – Coppull Parish Church School
• 2il: Louise – SS Philip and James CE Primary School (Pink 3)
• 3ydd: Amelie – Stanford in the Vale CE Primary School

Da iawn, rydych chi wedi gwneud gwaith ANHYGOEL.

Athro'r Ardd

Adrian Plant continues his fieldwork in the Amazon in collaboration with Jose Albertino Rafael and Josenir Camara from INPA (Brazil’s national Amazon research organisation) in Manaus.

So far two field-trips to remote corners of the Amazon have been successfully completed. The first was to Sao Gabriel da Cachoeira high up the Rio Negra not far from Brazil’s borders with Colombia and Venezuela and the second to a major tributary of the Amazon along the border with Peru at Benjamin Constant.

The forests of the Amazon Basin are flood forests; they become seasonally inundated by the flooded river and the waters bring with them many of the nutrients essential to the forests great productivity throughout the region. This year the forest remains unusually wet for the time of year which has caused a few practical problems for field entomology.- it is an acquired pleasure to slosh around in deep mud and water searching for new and interesting insects under a constant plague of biting mosquitoes. Yet, to an entomologist this is more or less a definition of “fun”!

The biodiversity is amazing of course and many of the insects seen and collected are undoubtedly new to science but will require much study in more comfortable surroundings after returning from the field. Meanwhile, Adrian will shortly be setting out on a third fieldtrip, this time to a little known area  between the mouth of the Amazon river and French Guiana where many exciting discoveries will undeniably be made.

Os oeddech chi yn ymweld â Llundain yr wythnos diwethaf mae’n siŵr eich bod chi wedi sylwi bod yr awyr yn llawn llwch – fel edrych drwy gwmwl brwnt! Ond beth yw mwrllwch, a beth yw’r gwahaniaeth rhyngddo â niwl?

Beth yw niwl?

Cwmwl ar y llawr yw niwl! Llawer o ddiferion dŵr mân yn hofran yn yr awyr yw niwl ac mae’n rhan naturiol o’r tywydd. Mae niwl yn helpu i ddyfrio planhigion ac yn ddiogel i chi ei anadlu i mewn.

Beth yw mwrllwch?

Llygredd aer yw mwrllwch. Mae’n cael ei gynhyrchu wrth i niwl gymysgu â mwg a nwyon cemegol ceir a ffatrïoedd ac mae rhai o’r cemegau yma’n wenwynig! Mae’n niweidio planhigion ac anifeiliaid a gall fod yn beryglus ei anadlu i mewn.

Mae’r mwrllwch diweddar yn Llundain yn gymysgedd o niwl, llygredd a thrydydd cynhwysyn – tywod o’r Sahara! Anialwch anferth yn Affrica yw’r Sahara ac mae peth o’r tywod yno yn fân iawn, iawn fel llwch. Weithiau bydd stormydd gwynt yn codi’r llwch a’i chwythu filoedd o filltiroedd i’r DU. Dyna siwrnai hir!

Yn anffodus, mae’r gymysgedd o niwl, llygredd a llwch yr anialwch yn golygu bod mwrllwch Llundain yn niweidio’r ysgyfaint, ac mae wedi gwneud rhai pobl yn sâl. Mae mwrllwch yn un rheswm da iawn pam y dylen ni i gyd geisio lleihau llygredd aer!

Beth alla i ei wneud i leihau llygredd aer?

Meddyliwch am lygredd aer… beth sy’n ei achosi? Allwch chi feddwl am 3 pheth y gallech chi ei wneud i leihau llygredd aer? Trafodwch yn y dosbarth cyn gwirio eich atebion yma (gwefan Saesneg).