Pauline Hilgers made this video.
Dragonfly migration: here.
On 9 August 2015, again to the botanical garden. Where in the part of the garden which is a reconstruction of its early seventeenth century past, these flowers grow: wild carrot.
Small red-eyed damselflies flying just over the garden pond, sometimes resting on water-lily leaves. Males and females in tandem; in two cases, on water plants; females with the lower parts of their bodies underwater, depositing eggs on the plants.
Then, the part of the garden near the exit, with the wild carrot flowers.
A female black-tailed skimmer dragonfly not far away.
Translated from the Dutch Vlinderstichting entomologists:
Friday, July 31, 2015
It’s a good year for the green snaketail dragonfly. This rare species has been absent for decades in the Netherlands, but since 1996 it’s back in Limburg [province]. Three years ago, the green snaketail dragonfly was seen along the Dommel [river in North Brabant province] and it has been seen there once again.
This is a video from the Czech republic, about white storks with (still very young) chicks.
On 12 July 2015, to Warmond.
In the meadow, five white storks: the two parents and their three recently fledged youngsters. Later, they would fly back to the nest.
More to the north west, a white wagtail on a fence.
Many barn swallows flying over the meadow behind the woodland.
A great crested grebe on a nest in the pond behind the castle. Its partner swims not far away.
A buzzard flying over the treetops.
This video is called Inside Nature’s Giants- Hippo.
From New Scientist:
Hippo dung is health food for river animals
18:45 15 April 2015 by Jessica Hamzelou
Don’t just flush it away. Just as one person’s trash is another’s treasure, hippo dung seems to be a valuable source of nutrition for the animals’ aquatic neighbours.
By injecting millions of tons of faeces into African waters every year, hippos may be providing a vital link between terrestrial and aquatic ecosystems.
Douglas McCauley of the University of California in Santa Barbara and his colleagues compared fish and dragonfly larvae in two river pools in Kenya‘s Laikipia district, one inhabited by hippos and the other hippo-free.
They found components of hippo dung in the tissues of dragonfly larvae that lived alongside the animals year round. During the dry season, fish absorbed faecal nutrients as well, while levels in dragonfly larvae increased.
The team thinks that during the wet season, high rainfall dilutes the hippos’ waste and faster-flowing rivers also wash away dung before animals can access it.
As climate change and development in east Africa continue to affect local rivers, it will be important to consider how the benefits of hippo excrement can be preserved.
Journal reference: Ecosphere, doi.org/3nv