{"id":18755,"date":"2018-01-18T14:58:16","date_gmt":"2018-01-18T14:58:16","guid":{"rendered":"https:\/\/dev.denmarkfarm.org.uk\/ditectifs-y-dylluan-wen\/"},"modified":"2018-01-18T14:58:16","modified_gmt":"2018-01-18T14:58:16","slug":"ditectifs-y-dylluan-wen","status":"publish","type":"post","link":"https:\/\/www.denmarkfarm.org.uk\/cy\/ditectifs-y-dylluan-wen\/","title":{"rendered":"Ditectifs y Dylluan Wen"},"content":{"rendered":"<h4><strong>Penwythnos diwethaf cawsom ein ymosod gan gr\u0175p brwdfrydig o dditectifs mamaliaid, a oedd yn methu aros i ddarganfod beth oedd ar y fwydlen yn ein gweithdy Dadansoddi Pelenni Tylluanod.&nbsp; <\/strong><\/h4>\n<h5><strong>Wedi&#8217;u harfogi \u00e2 phecyn offer fforensig o hambwrdd, menig, gefeiliau a brwsh dannedd, fe wnaethon nhw ddechrau ar y gwaith o ddarganfod beth mae&#8217;r tylluanod gwynion yn Fferm Denmarc wedi bod yn ei fwyta.<\/strong> &nbsp; &nbsp;<\/h5>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-11892 size-full\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n.jpg\" alt=\"dadansoddiad pelenni tylluan ysgubor\" width=\"960\" height=\"385\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n.jpg 960w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n-800x321.jpg 800w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n-768x308.jpg 768w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n-300x120.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26804933_1644228469003447_1887898357900710945_n-685x275.jpg 685w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>Yn ogystal \u00e2 bod yn ffordd ddiddorol o dreulio ychydig oriau, gall dadansoddi pelenni tylluanod hefyd gynhyrchu data defnyddiol ar ddeiet yr adar, a darparu gwybodaeth am ddosbarthiad mamaliaid bach. Mae llawer o rywogaethau adar yn cynhyrchu pelenni gan gynnwys tylluanod, adar ysglyfaethus, gwylanod a hyd yn oed adar y to. Mae&#8217;r ysglyfaeth yn cael ei llyncu&#8217;n gyfan, ac yna mae&#8217;r belen sy&#8217;n cynnwys y rhannau anhreuliadwy o&#8217;r bwyd fel y ffwr a&#8217;r esgyrn yn cael ei chwydu. Mae tylluanod gwynion yn ffynhonnell arbennig o dda o belenni gan eu bod yn tueddu i&#8217;w gollwng o dan eu safleoedd clwydo (mae angen trwydded i fynd i mewn pan fydd y clwyd yn cael ei defnyddio), ond gellir dod o hyd i belenni hefyd ar neu o dan byst ffens a waliau lle mae aderyn wedi eistedd i fwydo &#8211; felly mae&#8217;n werth chwilio amdanynt pan fyddwch chi allan am dro.   <\/p>\n<figure id=\"attachment_11890\" aria-describedby=\"caption-attachment-11890\" style=\"width: 267px\" class=\"wp-caption alignleft\"><img decoding=\"async\" class=\"wp-image-11890 size-medium\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-267x300.jpg\" alt=\"dadansoddiad pelenni barnowl\" width=\"267\" height=\"300\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-267x300.jpg 267w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-800x899.jpg 800w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-768x863.jpg 768w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-300x337.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n-685x770.jpg 685w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/26229945_1644227982336829_2740875189100979937_n.jpg 854w\" sizes=\"(max-width: 267px) 100vw, 267px\" \/><figcaption id=\"caption-attachment-11890\" class=\"wp-caption-text\">Archwilio gweddillion pelen tylluan yn y microsgop<\/figcaption><\/figure>\n<p>Dechreuodd ein sesiwn dditectif gyda chyflwyniad ar sut i adnabod mamaliaid o&#8217;u hesgyrn genau a&#8217;u dannedd. Yna gollyngwyd y gr\u0175p yn rhydd gydag amrywiaeth o belenni tylluanod gwynion, a roddwyd gan berchnogion clwydi lleol, yn ogystal \u00e2 phelenni gan ein tylluanod gwynion ein hunain yn Fferm Denmark. Daeth y cyfranogwyr \u00e2&#8217;u pelenni eu hunain hefyd i&#8217;w hadnabod &#8211; gan gynnwys tylluan frech a bwncath, a gwobrwywyd eu hymdrechion trwy ddod o hyd i goes madfall yn y belen bwncath.    &nbsp;  Roedd microsgopau wrth law i roi golygfeydd agos o&#8217;n darganfyddiadau:&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_11895\" aria-describedby=\"caption-attachment-11895\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img decoding=\"async\" class=\"wp-image-11895 size-medium\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/Picture1-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/Picture1-1-300x225.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/Picture1-1.jpg 538w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-11895\" class=\"wp-caption-text\">Penglog y llyg cyffredin, gyda dannedd coch-flaen diagnostig<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Treulion ni amser yn cymharu nodiadau a sbesimenau, ac yn pendroni ynghylch nifer y gwreiddiau dannedd ym mhob asgwrn g\u00ean, gan chwilio am y dant 5-gwraidd anodd ei ddal mewn llygoden y cynhaeaf, a&#8217;r dant 4-molar mewn pathew.&nbsp;  Mae cofnodion am lygoden y cynhaeaf a phathewod yn brin yng Nghymru, felly gallai dod o hyd i benglog ddarparu gwybodaeth werthfawr am eu dosbarthiad. Ni wnaethom ddod o hyd i unrhyw rai y tro hwn, ond fe wnaethom ddod o hyd i weddillion mamaliaid bach eraill gan gynnwys llygoden y maes a llygoden gyffredin gyda&#8217;u dannedd coch nodedig, yn ogystal ag adnabod y detholiad rhyfedd a rhyfeddol o esgyrn eraill. Ail-ymgynnullodd un cyfranogwr ifanc hyd yn oed yr esgyrn o&#8217;i phelen i mewn i sgerbwd llygoden y maes.  <\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-11894 aligncenter\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/owl-pellet-219x300.jpg\" alt=\"\" width=\"219\" height=\"300\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/owl-pellet-219x300.jpg 219w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/owl-pellet-300x411.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/owl-pellet-685x939.jpg 685w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/01\/owl-pellet.jpg 700w\" sizes=\"(max-width: 219px) 100vw, 219px\" \/><\/p>\n<p style=\"text-align: center;\"><em>&nbsp;Sgerbwd rhannol llygoden y maes, wedi&#8217;i ail-ymgynnull o belen tylluan wen&nbsp;<\/em><\/p>\n<p style=\"text-align: left;\">Cadwodd ein gwaith ditectif ni mor brysur drwy\u2019r bore. Fel y dywedodd un cyfranogwr wrthym <em>\u2018Rydym wedi casglu pelenni o\u2019r blaen ond heb eu dadansoddi\u2019n llawn erioed. Roedd yn ddiddorol neilltuo amser i hyn a chanolbwyntio. Mae\u2019n anodd gwneud hynny gartref. Gwych gweld y plant mor brysur.\u2019<\/em> <\/p>\n<p style=\"text-align: left;\">Os hoffech chi roi cynnig ar hyn gartref, yna mae canllaw y gellir ei lawrlwytho ar gael ar wefan yr <a href=\"http:\/\/ww2.rspb.org.uk\/Images\/Owlpellets_tcm9-133500.pdf\">RSPB<\/a> , a rhagor o wybodaeth ac adnoddau ar wefan <a href=\"https:\/\/www.barnowltrust.org.uk\/barn-owl-facts\/barn-owl-pellet-analysis\/\">Ymddiriedolaeth y Tylluanod Gwan<\/a> .<\/p>\n<p>Os hoffech chi ddarganfod mwy am famaliaid bach mae cwrs tridiau <a href=\"https:\/\/www.denmarkfarm.org.uk\/events\/british-mammals-4\/\">Mamaliaid Prydain: Cnoi, Cnoi a Chnoi Pryfed<\/a> yn dod i fyny ym mis Mai 2018 yn Fferm Denmark. Mae yna hefyd <a href=\"https:\/\/www.denmarkfarm.org.uk\/events\/\" target=\"_blank\" rel=\"noopener\">lawer o ddigwyddiadau eraill ar ein gwefan<\/a> ar gyfer cariadon natur ac ecolegwyr brwd. <\/p>\n<p>Diolch o galon i Aline Denton a Chloe Griffiths am hwyluso&#8217;r gweithdy hwn.<\/p>\n<p>Lluniau a dynnwyd gan Aline Denton, Chloe Griffiths a Jon Sayer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Penwythnos diwethaf cawsom ein ymosod gan gr\u0175p brwdfrydig o dditectifs mamaliaid, a oedd yn methu aros i ddarganfod beth oedd ar y fwydlen yn<\/p>\n","protected":false},"author":1019,"featured_media":18760,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1156],"tags":[1217,1211,1218,1216,1219,1215,1220,1221],"class_list":["post-18755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-cy","tag-bywyd-gwyllt","tag-canolfan-cadwraeth-fferm-denmarc","tag-cyrsiau-bywyd-gwyllt","tag-cyrsiau-fferm-denmarc","tag-dadansoddiad-pelenni-tylluanod","tag-fferm-denmarc","tag-pelen-dylluan","tag-tylluanod"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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