| Some Frog and Toad Sightings in Hackney, E. London |
The following is an occasional diary of amphibian spottings in our garden in Hackney, London. See also the Reptiles and Amphibians of the UK e-forum for related discussion.
| Sightings in 2003 |
There we were, feeling toadless, when what should turn up in our pond but yet another Bombina. A rather greener version this time but identified in an instant, with our new-found expertise, as a male (a quick burst of whistling from us soon got him hoop-hooping) Bombina orientalis.
So, the big question, what brought him to our pond now? Has he been waiting on the sidelines for his predecessors to
abandon their territory? Did a couple of days very wet weather allow him to make his move? Or is one of our neighbours
quietly releasing toads into the wilds of Hackney week by week? The mystery continues...
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| Bombina's back! | |
Following further lengthy discussion on the Rauk e-forum we decided to accept an offer to rehome our toads from Gemma Fairchild (administrator
of the e-forum and an expert in these things). Apparently the bombinas are unlikely to survive a UK winter and there is a chance that
the Green Toad would cross-breed with native fauna. So, 10pm found us all outside round the pond armed with torches, buckets and
nets. And we're pleased to say that our new friends didn't let us down. Just as the bombinas had been fished out of the pond,
the Green Toad obligingly hopped past. And a couple of native frogs popped up to watch all the excitement.
Admittedly none of exotics seemed too thrilled to find themselves in a bucket, but we're sure that they'll
be very happy in their new home with Gemma. Ciao ciao bombina!
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| A fond farewell. | ||
After all that excitement, we can now we can turn our attention to more mundane things - like stopping our pond from looking like thick, green, pea soup. According to Froglife all we need is a few Daphnia. Unfortunately, they are unlikely to be as photogenic as our recent visitors.
Just popped out to say hello to our two Bombinas when we spotted yet another new arrival hopping towards us.
It is about the size of a "normal" toad (~8cm), but with rather unusual colourings. It has a pale sandy
coloured, slightly warty underside, with a slightly darker top but with striking green mottles. The warts on the
side of the body are more orange coloured. Eyes have horizontal elliptical pupils with a slightly green mottled
iris. It moved by jumping rather than walking. We must poll the neighbours to find out who is the local
"keeper" of exotic herpetofauna.
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| Is this another exotic amphibian in our garden? | |
After some lengthy discussion on the RAUK e-forum,
it would appear that the two fire-bellies are Bombina orientalis. Normally found in Korea or pet shops,
these are more commonly seen with green and black upper surfaces. The black spines on the warts and the orange toes
positively identify them as B. orientalis. This collection of photos
includes one very similar in colour to ours.
For the fourth night running, the Hyla arborea is back. It would appear to spend daylight hours elsewhere (up a tree?)
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| Hyla arborea sharing the pond with mosquito larvae | |
We appear to have, not one, but two fire-bellied toads in our pond. For the first time we have seen them together.
They both call at night, but at slightly different pitches. We have also heard similar calls from neighbouring gardens.
Let's hope there are some females out there somewhere.
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| One fire-bellied toad... | ...and the other one |
The 'small frog' (see entry 'Early July' below) turns out not to be a frog at all, but probably the fire-bellied toad
Bombina bombina! We discovered this around dusk after a particularly hot day in London. We had a few friends
over and were playing music in the back garden. We noticed a regular 'hoop-hoop-hoop' accompaniment to the music,
sounding remarkably similar to the 'hoop-hoop' noise often produced by Brazilian Samba bands (which was playing at
the time).
Not only was this rather loud noise being produced by our toad, but it had been transformed from a timid pond-diving
creature into a much more assertive beast. Every time one of the much larger common frogs tried to surface in the pond,
the toad would swim rapidly towards it and push it back down below the surface. Only in doing this, did we spot its
bright orange underside. We managed to get some photos by temporarily transferring it to a large glass jar.
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| Fire-bellied toad | ||
On the same evening we have had our fist sight this year of Hyla arborea. This is now the third year running
we have seen this introduced species. Is it the same one, or are they breeding here? Speaking to our neighbour,
she says the same frog/species has settled in a small goldfish bowl-size pond she has in her garden. This is the first
time we have seen it in water - the previous occasions, after heavy rain, it has been found in our conservatory (see below)
or climbing our outside wall.
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| European Tree frog - Hyla arborea | ||
The pond has turned murky green again, but this doesn't seem to have put off the frogs. The pond has a new resident - a small 3cm frog that seems much more timid than the larger frogs. If ever it sees us, even from several metres away, it dives down.
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By May, we have a couple of regular visitors/residents in the pond that has now cleared from its
original murky green.
On warm evenings we can hear the distinctive "rark-rark-rark" call of the Hyla arborea from somewhere in the surrounding trees. We also hear an occasional much louder 'rark' call - like a metallic version of a Magpie call. |
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We have built ourselves a small pond partly in order to attract local amphibians. Dug in March 2003, it was too
late for spawning frogs and toads, but we did provide a home for a pond skater within a day of it being filled.
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We found the following frog sitting in a plant pot in our conservatory after heavy rains in August. It is almost exactly
a year since we spotted a similar one in our back garden. It looks like the tree frog Hyla arborea. Are they starting
to colonise southern England?
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The frog is about 3cm in length with a pale sandy coloured underside. It has a dark grey line running
along the side of its body from its eyes to hind legs. We found it sitting in a plant pot in our
conservatory after what has been a couple of weeks heavy rain.
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