0:00:12 > 0:00:13Morning.
0:00:13 > 0:00:15Ricky here with Newsround on Saturday.
0:00:15 > 0:00:18First up, more success in the pool as Team GB
0:00:18 > 0:00:20bagged their fourth medal in the World Championships
0:00:20 > 0:00:26in Hungary.
0:00:26 > 0:00:28They won gold in the men's 4x200m freestyle.
0:00:28 > 0:00:31GB had three medals from the first five days of competition, all gold,
0:00:31 > 0:00:33with two for Adam Peaty.
0:00:33 > 0:00:35Next, take a look at this little guy.
0:00:35 > 0:00:37He's a hazel dormouse.
0:00:37 > 0:00:40Recently, the numbers of these tiny mammals have dropped.
0:00:40 > 0:00:43Whitney went to meet the people on a mission to help them.
0:00:47 > 0:00:50The hazel dormouse weighs between 18 to 20 grams.
0:00:50 > 0:00:53Fruits, flowers, nuts and insects are what they like to eat.
0:00:53 > 0:00:56And woodland in parts of England and Wales is where they live.
0:00:58 > 0:01:02I've come to these woods in Nottinghamshire where nest boxes
0:01:02 > 0:01:05have been put up to help keep dormice safe and it's Ian's job
0:01:05 > 0:01:07to help monitor them.
0:01:07 > 0:01:10It looks like we've got a dormouse in there in a very deep sleep,
0:01:10 > 0:01:13so we can take that off and have a look
0:01:13 > 0:01:14and see what that is.
0:01:18 > 0:01:22So they go into a large bag just to make sure, if they are active,
0:01:22 > 0:01:24that they can't escape, because they are very fast
0:01:24 > 0:01:28and very good climbers.
0:01:28 > 0:01:30It's in a very deep sleep, probably because it's been raining
0:01:30 > 0:01:32or it's been cold up here.
0:01:32 > 0:01:37Oh, my gosh, so cute.
0:01:38 > 0:01:42We've marked some of these animals with a small chip and we're just
0:01:42 > 0:01:44looking to see if this one's got one in.
0:01:44 > 0:01:46I don't think it has.
0:01:46 > 0:01:48We're just putting him in a small bag to weigh him.
0:01:48 > 0:01:51There's plenty of air in there for the time this
0:01:51 > 0:01:52dormouse will be in there.
0:01:53 > 0:01:5519.5.
0:01:55 > 0:01:59So why are dormice on the decline?
0:01:59 > 0:02:01Simply because we don't manage our woodlands very well.
0:02:01 > 0:02:05We used to cut our woodlands regularly to take timber out and
0:02:05 > 0:02:12firewood out and we don't do that any more.
0:02:12 > 0:02:14So a lot of woodland is becoming shaded.
0:02:14 > 0:02:16We used to cut out woodlands regularly to keep wood out
0:02:16 > 0:02:18and we don't do that any more.
0:02:18 > 0:02:21So the areas where dormice live, the shrub storey, is not
0:02:21 > 0:02:23so frequently found in our woodland any more.
0:02:23 > 0:02:26So now he's back inside that box and we block the hole again
0:02:26 > 0:02:27so he can't escape.
0:02:27 > 0:02:30And what we do is we take this box and we put it
0:02:30 > 0:02:32back on the tree where we found it,
0:02:32 > 0:02:34and now we know he's back safely in his box,
0:02:34 > 0:02:44where he'll probably stay for the rest of the day.
0:02:45 > 0:02:46Check out these very rare pictures of tigers
0:02:46 > 0:02:48in Bhutan in South Asia.
0:02:48 > 0:02:50The big cats were spotted on remote cameras gathered
0:02:50 > 0:02:51during a three-month expedition.
0:02:51 > 0:02:54The trip by researchers was done to highlight the need for greater
0:02:54 > 0:02:56protection of wildlife corridors - safe places where tigers
0:02:56 > 0:02:57can roam between different areas.
0:02:57 > 0:02:58That's all from me.
0:02:58 > 0:03:00Newsround's back just before 12. Bye.