Rydym ni wedi bod wrthi'n gosod y trawslathau yr wythnos hon. Dyma fydd yn cynnal y to gwellt. Mae diddordeb mawr gen i yn y broses hon. Roedd Dafydd, Tim ac Andy yn ddigon caredig i adael i mi helpu! Byddaf yn y Pentref rhwng dydd Llun a dydd Iau yn ystod hanner tymor. Dewch draw i weld y gwaith.

One of the peregrine chicks has died. We are now down to three chicks in the nest.  

Staff, and our peregrine-cam visitors, noticed yesterday that there were only two chicks in the nest. So our first thought was that we had lost two!  

Luckily the third chick returned to the nest in the evening after having been on a journey around the clock tower ledge.  

Today the RSPB project officer has spent the day looking for the fourth chick, but to no avail. It seems unlikely that the chick is still alive.  

One possible explanation is that the chick was the weakest of the four, and that the hot weather over the last few days has been too much for it to cope.  

The three remaining chicks look very healthy and have a very good chance of surviving, particularly as the weather seems to be getting cooler.

Last week our Museum photographer took some stunning pictures of the peregrines from the Museum's roof. We hired a 600mm F4 lens with a 2x converter to enable us to zoom in to the nest.

Here are some images of the 4 chicks and the parents feeding the chicks.

Edrychwch ar y gyfres yma o lyniau o'r Titywod Fawr sy'n nythu yn ein blwch nythu gyda camerau arbennig!

Thanks to everyone who came to the Moth Night last Saturday. It was the first time we've had a moth night at St Fagans and I found it very interesting. I'll definitely like to do more in the future!

My personal favourite moths on the night were the Lunar Marbled Brown and the Nut-Tree Tussock. Here's a list of all the species we found - thanks to Dave at SEWBReC for this!

Micropterix thunbergella

Eriocrania subpurpurella

Agonopterx cf heracliana

Capua vulgana

Dark-barred Twinspot Carpet

Small Phoenix

Golden-rod Pug

Mottled Pug

Brimstone

Coxcomb Prominent

Lunar Marbled Brown

Flame Shoulder

Common Quaker

Hebrew Character

Nut-tree Tussock

Pictures and loads more info on moths can be found at UK Moths