WWF Immersion 360 – Épisode 2 à Chérine en Brenne

WWF Immersion 360 – Épisode 2 à Chérine en Brenne

We’re in Brenne, in the
department of Indre, a region known for its ponds. This region is lucky enough
to host a multitude of fascinating endangered
animal and plant species that are protected, such as
this whiskered tern, which is a small gull that
nests on floating vegetation, particularly water
lilies in ponds. The pond we’ll be looking
at is just behind there. We’ll park here. I’ll show you where
we’ll be tonight. Do whiskered terns usually
leave their chicks on the lily pads? During the day, they feed
them as best they can. They frequently bring
prey back to the nest over the course of the day
and then the adults leave the colony at night and
gather together to roost. There’s a bird just there. Take a look, it’s got a band. If you want to take a look… You see it?
Yes, I see it. This is the banding
program that we’ve been running since
2002 on the Cherine reserve. We put these coloured bands
on them that enable us to differentiate them and
identify them again over the ensuing years
using a telescope. Over the last 15 years,
we’ve observed that the survival rate of adult
birds is fairly constant, it’s around about 75%,
which is pretty good. However, we’re quite worried
about the young ones, survival rates were around
60% for the first few years, but since 2012, we’re down
to only 20% survival. Those aren’t whiskered
terns. That’s a grebe nest. This is a whiskered tern nest. Same as earlier,
two brothers. So we’ll get this band on, it’s
basically the bird’s ID card, enabling us to see where
and when it was tagged when we check up on it later. I’m going to give you
the measurement of the folded wing, Jacques. It’s a number 2 again. Number 2 means he’s
ten to twenty days old. We’ve been observing
whiskered terns in Brenne since 1982, so we really
have quite a bit of experience with this species because
it’s one of the victims of climate change. The ponds are filling up less
and less because of the lack of rainfall and, at the same
time, we’re getting more and more storms which can end
up drowning the broods. These birds spend winter in
sub-Saharan Africa in very dry conditions, so if they
don’t have a good winter, they can die from lack of food
and never come back to where they were born. These birds require a lot of attention, and Cherine reserve has chosen them
as a priority species for protection, so we’ve
bought ponds with WWF, so we can retain the
floating vegetation. Bearing in mind that this
vegetation is threatened by the development of
fish farming and also by coypu beavers,
that feed on it. So now, there are ponds
within the reserve with lots of vegetation and swathes
of water lilies, allowing us to protect these birds,
to correctly manage the water levels,
and to study the birds so that we can provide optimal protection. All the data we collect can be
accessed by other scientists and the general public. In fact, on the
CRBPO website (Centre de Recherche Biologique des Populations d’Oiseaux) there’s a “Consultation
des données” tab. Click on that and you’ll
see a link to an interface where you can get the
charts for all the tests that have ever been carried
out on the species. So it really is a fragile
species, and that’s the reason, because these birds are
really endangered, why they’re one
of the symbols of the Cherine
nature reserve. And that’s why we decided
to buy the ponds: to save the birds and to
study them because we can’t protect them well if we don’t understand them. A live egg-laying! That’s amazing!

7 thoughts on “WWF Immersion 360 – Épisode 2 à Chérine en Brenne

  1. Magnifique vidéo qui me conforte encore plus dans mon envie de protéger la faune et la flore à travers mon futur métier ☺️

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