Mae gan Len natur fyddin
o wirfoddolwyr sydd yn darllen a chofnodi data diddorol o hen ddyddiaduron
Mae'r dyddiaduron yn dod o sawl man ac mae
llawer o ddata diddorol a pwysig yn cael ei gasglu.
Mae un cofnod diweddar yn dod o ddyddiadur
ddi enw o Abergele rhwng 1922 - 1944, ac yn nodi cofnod o Greyrfa ym Modedern,
Ynys Môn yn 1925. Meddai’r dyddiadur “
to Holyhead, visited Heronry at Treiorwerth, Bodedern, about a dozen nests,
apparently eggs but failed to climb up. Other nests looked half finished”
Mae'r cofnod yma yn gynt na chofnodion
sydd wedi casglu gan arolwg nythod Crëyr, ac felly dyma yrru’r cofnod I John
Marchant sydd yn rheoli arolwg Crëyr.
Dyma John yn ôl hefo mwy o wybodaeth ddiddorol.
“Max
Nicholson's paper from the 1928 survey lists this and Cadnant as the only
heronries known to be active in Anglesey at that time. The notes (British Birds 22: 291) say "+
8 before 1907, 20 c1907, 10 in 1927". In 1928 there were subgroups of 4
and 2 nests: the first site was founded in 1876 and the second c1918, probably
from Plas Tregaion (sic). The reference
cited is:
Forrest,
H.E. (1919) Handbook to the Vertebrate Fauna of North Wales”
Mae'r data yma yn rhedeg o 1876 tan
heddiw, sydd gennych gofnod i guro hyn?
llun/photo Simon Gillings
Llen natur has an army of volunteers who are examining and
extracting data from Historical diaries. These diaries come from various
sources and a lot of interesting and valuable data is being collected.
A recent record comes from a nameless diary from the
Aberegele area for the years 1922 - 1944
and records a heronry at Boderern Anglesey in 1925. To quote the diary for 3rd
March “ to Holyhead, visited Heronry at
Treiorwerth, Bodedern, about a dozen nests, apparently eggs but failed to climb
up. Other nests looked half finished”
This record precedes the existing Heronries survey so I submitted
the record to John Marchant who organises the Heronries census, who came back
with even more interesting information.
“Max Nicholson's paper from the 1928
survey lists this and Cadnant as the only heronries known to be active in
Anglesey at that time. The notes (British Birds 22: 291) say "+ 8
before 1907, 20 c1907, 10 in 1927". In 1928 there were subgroups of 4 and
2 nests: the first site was founded in 1876 and the second c1918, probably from
Plas Tregaion (sic). The reference cited is:
Forrest, H.E. (1919) Handbook to the
Vertebrate Fauna of North Wales”
So this data set runs from 1876 to the present, can you beat that ?
+(Simon+Gillings)+(A).jpg)
