Marsh Frog   (aka Lake Frog / Laughing Frog)     (Pelophylax (formerly Rana) ridibunda)

The Marsh Frog is not a native species in Britain but was first introduced back in the 1930's at Romney Marsh in Kent. These populations in Kent were introduced originally from just a dozen specimens originating from Hungary. The Marsh Frog has since thrived in this area and can now be found at other sites in Kent. It has also since been introduced to other sites in the UK where it has also established breeding colonies. The Marsh Frog is the largest European frog growing to 15cm (12-13cm being more common) in length in the UK and is considerably larger than the Common Frog. Because of this it is feared that our native species of frog could suffer due to the dominance of the Marsh frog both as an adult and as a tadpole. But current studies may show that both species have different habitat preferences and the Marsh Frog may not affect the Common Frog at all. The Marsh Frog has a loud and distinctive call that can be heard day and night through May and June often causing great disturbance to people living in the area.


As its name suggests the Marsh Frog is most commonly found in marsh areas. It is largely aquatic and usually hibernates at the bottom of ponds. Unlike many amphibians the Marsh Frog loves to bask in the midday sun and is often found basking at the edge of ponds and ditches. It is a very nervous frog and will jump straight for the water at the first sign of trouble. With its long and powerful hind legs the Marsh Frog can jump huge distances for its size and is surprisingly fast and agile on land.



Unlike our Common Frogs the frog spawn of the Marsh Frog is not laid at the top of the water. It is hidden deep in the water amongst dense vegetation where is is often difficult or impossible to spot.  Marsh Frogs are the only water frog in the UK that can eat underwater. They are opportunistic feeders and will eat any insects that come within range. Their hunting response is usually triggered by movement which can sometimes result in cannibalism when the movement of a tadpole close to the adult frog causes them to pounce. The Marsh Frog tadpoles grow up to 8cm in length.



The Marsh Frog can be distinguished from our native Common Frog by several key points. The Marsh Frog is larger and has much longer hind legs. It has close-set eyes. It lacks the dark 'eye mask' and usually the often present dark vertebral stripe of the Common Frog. It can have warty granular skin with dark blotches. It often has prominent grey vocal sacks on the side of its mouth and a more pointed head shape.



Covered in pond algae and blanket weed this Marsh Frog is well camouflaged against its surroundings and is ready to hop into the water at the first sign of trouble.





 






 

The "Laughing Frog" gets its name from the distinctive and characteristic croaking sound it makes that resembles a laughing sound. This Marsh Frog pictured above isn't actually laughing though. Reptiles and amphibians may open their mouths on occasion when basking to help regulate their body temperature.











A very young juvenile Marsh Frog measuring just 15mm.










































Marsh Frogs often bask on the banks but are very quick to jump into the water at the first sign of someone approaching. When walking in Marsh Frog territory you'll often hear the loud "plop" as Marsh Frogs dive into the water without you ever even seeing the frog.







This very large specimen was confident enough to bask in a marsh pond without moving a muscle as I laid down in the reeds to take its photo.






Two juvenile Marsh Frogs exhibiting different patterns and colours.







Newts 


Palmate Newt     (Lissotriton helveticus)

We have three newt species native to the UK, the Great Crested Newt, the Smooth Newt and the Palmate  Newt. We also have breeding colonies of the non-native Alpine Newt in the UK. Newts are often mistaken for lizards but the two are very different creatures. Lizards are amphibians and lizards are reptiles. Lizards are very fast moving and Newts are quite slow by comparison. Lizards have 5 toes and Newts only have 4 toes!

The Palmate Newt is Britain's smallest newt species and usually grows to a maximum length of 80-90mm. These newts usually arrive at the breeding pond sites from February. Although sometimes they arrive at the end of autumn and spend the winter dwelling at the bottom of the ponds. Eggs are laid any time between March and June. A female newt can lay 200-300 single eggs attached to and concealed amongst underwater plants. The Palmate Newt is less frequently found in garden ponds than the Smooth Newt preferring ponds located on heathland, woodland and grassland sites. 



Newts being amphibians spend some of their life as a terrestrial species living on land and some of their life during the breeding season living in ponds as an aquatic species. Palmate Newts are a predominantly nocturnal species emerging at dusk to actively hunt for small insects and worms on land and similar sized aquatic crustaceans and insect larvae when in water. They will also feed on frog spawn and small tadpoles. Like frogs and toads newts also use their long tongue to catch their prey when on land.




The Palmate Newt can look very similar in appearance to the Smooth Newt. One way to tell them apart is to look at the throat. The Palmate Newt will usually have a pink unspotted throat in comparison to the white spotted throat of the Smooth Newt. Palmate Newts also have two small white tubercles on their heels that Smooth Newts do not possess. During the breeding season the males develop distinctly frilled / webbed hind feet. They also develop a thin filament at the end of the tail which can be between 4-7mm in length. Males tend to have larger more prominent spots on the upper body and tail than the females. Males also tend to be slightly smaller than the females. The female can look quite plump in the breeding season prior to depositing her eggs.


Palmate Newts have been known to live for up to 19 years in captivity.  In the wild they are found throughout the UK and Western Europe but are absent from Ireland.














 

Smooth Newt  (Lissotriton vulgaris vulgaris) 

Smooth Newts are the most widespread and commonly found newts in British garden ponds. They are usually slightly larger than the Palmate Newt. The Smooth Newt returns to breed at the breeding site around February or March and will remain in the water until about June. During the breeding season the males have large, colourful, wavy crests on their back and tail. Once the terrestrial phase begins and the newts leave their breeding ponds, these crests are lost and both sexes begin to look very similar. At this stage the males can be distinguished by their larger cloaca at the base of the tail or by the spots on their belly which are larger than the spots on the belly of the female.



One of the reasons behind the success of the  Smooth Newt in Britain is its willingness to travel great distances during its terrestrial phase. It will often quickly discover and colonise new ponds and can sometimes be found in huge numbers in even small ponds. This may help it to survive as its natural habitat is lost through development and agriculture.















 

Great Crested Newt  (Triturus cristatus

Great Crested Newts are the largest and rarest of Britain's native newts. They are considerably larger and stockier than either the Palmate or Smooth Newts and grow to lengths exceeding 15cm. Because of the difference in size GCNs are known on occasion to prey on young newts of the other species.
As well as the size difference GCNs also have warty granular skin unlike the smooth skin of the other newt species. During the mating season the male GCNs have a magnificent crest which the female does not possess. This crest is in two distinct parts: the back crest and the tail crest. The Smooth Newt has one long continuous crest.



The underside of the male is bright orange or yellow. The large black spots on the underside are uniquely patterned to each specimen and can help in identifying individual newts. The GCN is the only newt species in the UK to be afforded full protection by law  from being killed, harmed, or even disturbed. This makes it an offence to look for them unless you hold a GCN licence or you are in the company of a licence-holder who is authorised to survey for them.




 

Great Crested Newts are ferocious hunters and will prey on snails, insects, water fleas, tadpoles and even smaller newts. Out of water they will readily prey on slugs and earthworms too. Larger victims are sometimes grabbed in the newts mouth and violently shaken to stun the prey. GCNs have been known to live for over 15 years but this is rarely achieved in the wild due to predation.










 

Alpine Newt   (Mesotriton alpestris  /  Triturus alpestris)

Alpine Newts are are not native to the UK but they are another introduced species from Europe that has now managed to successfully breed at many sites across the UK. They are not generally considered to be a major threat to our indigenous species but more research needs to be done to accurately evaluate their impact on our native wildlife. They were first recorded in the UK in Surrey back in the 1920's. They can grow to around 11cm in length but they are not quite as sizeable as our native Great Crested Newts.




The Alpine Newt has blue/green marbled skin with both sexes having a bright orange / yellow (usually unspotted) underside with a blue stripe at either side. They do not have the warty skin of the Great Crested Newt or the black eye stripe of the Smooth Newt.  During the breeding season the male (pictured above) has a small black-spotted yellow / white dorsal crest and rows of black spots along its sides.





They are most commonly found in urban areas in garden ponds where they have been deliberately released. The Alpine newt is believed to be a carrier of the highly dangerous Chytrid fungus so all sightings should be reported so the populations can be tested for this virus before it can spread to our native amphibians. In captivity these newts live for 15 - 20 years.



---------------------------------------------------------------------------------------------------------------------------------------------------------------


Common Toads

The male Common Toad locks himself onto the back of the much larger female for many hours during the mating process. Sometimes they will lock into position and commence mating before they've even made it to the water. This copulatory embrace is known as amplexus.




Toads on occasion prefer to spawn in temporary pools. Ponds, lakes and streams are often already full of predators waiting for the arrival of toad / frog spawn to eat. Temporary pools have less predators. This is a gamble though for the toads as the pools usually have less cover for the tadpoles and also often dry out before the tadpoles mature and are able to survive on dry land as toadlets. Sometimes the gamble pays off and sometimes it doesn't.




From spawn to Toadlet in about four months. Toadlets usually emerge from the pond later than Froglets and this often occurs after good rainfall during the summer. This Toadlet was just 12mm in length and was photographed as in left the pond in mid-July. Once out of the pond life is a little safer for the tiny Toadlet. Due to Toads secreting the foul-tasting irritant "bufagin" from their warty skin, most would-be predators quickly learn to avoid eating Toads. Grass Snakes and Hedgehogs are not put off though and will still actively predate Toads.


 

Young adult female Common Toad.



 

Large adult female Common Toad.







 

Adult male Common Toad.




Common Toads in amplexus

This shot clearly shows one of the key features to identifying the sex of adult toads, the large, muscular and powerful forearms of the male toad, that are used to grip tightly onto the female whilst in amplexus.




 

Natterjack Toad   (Bufo calamita/Epidalea calamita)

The Natterjack Toad is an illusive and rarely seen nocturnal amphibian that is now confined to just a handful of monitored sites throughout the UK. This toad is classified as an endangered species in Britain and receives full protection under UK law making it an offence to disturb them in anyway without a licence. There are reintroduction programmes being trailed at several carefully selected sites across UK to help halt its decline.  Natterjack Toads are smaller than our Common Toad with males usually growing to around 6-7cm in length and females slightly larger at 7-8cm.



 

These toads are known as the "running toad" as they tend to run rather than hop to chase down insect prey with their short limbs. They have beautiful green or yellow eyes with a vertical slit-pupil. The skin is generally light green or cream coloured with a distinctive yellow stripe running along the centre of its back. They also have many visible warts that are often red or yellow in colour.




 

In the UK these toads are found mainly at sandy sites such as coastal sand dunes and lowland heath sites. They prefer areas of open and unshaded bare ground where foraging and tunnelling is easier. Natterjack Toads mate slightly later in the year than the Common Toad with mating usually taking place from March to May. Like the Common Toad the eggs are laid in long strings but these egg strings are single and not double rows like that of the Common Toad.




 

Natterjacks secrete toxins through their parotoid glands and skin to deter predators but this doesn't protect them from the Grass Snake which seems unaffected and will readily prey on these small defenceless amphibians. During the daytime the short limbs of theNatterjack are used to great effect to burrow into loose sand or soil and they can often be found sharing shallow burrows with other Natterjack Toads.







 




 






 

Toad Patrols

During the first two weeks of Spring Toads join in a mass migration to their breeding ponds to mate. This journey is often a long and perilous trip that claims the lives of many Toads as they attempt to cross busy roads. These deaths on Britain's roads are one of the biggest risks that Toads face these days. KRAG is one of many local wildlife and conservation groups that take an active role in trying to reduce these fatalities by organising evening Toad patrols during the 2-4 weeks of migration. Groups of volunteers meet at known highway hotspots for Toad migration and collect and rescue these Toads as they approach the busy roads. The Toads are collected up and given a helping hand by carrying them across the road and releasing them near to their spawning ponds.  Of course it's not just toads that are collected. Other amphibians including frogs and newts also migrate at the same time and suffer the same fate, so these are collected too.



Volunteers are asked to give up whatever time they can. Whether it is half an hour a week during the breeding season or 2 hours a night, whenever the weather is suitable, all help is hugely beneficial to local amphibian populations. Volunteers armed with just a bucket, torch and a high-visibilty waistcoat can become actively involved in local conservation and make a real difference. Amphibian numbers have been declining across the UK over the past decade. Amphibians play a vital role in the control of garden pests such as slugs and other insects so without them your gardens would suffer.



The amphibians usually stay at the ponds for a week or two whilst breeding takes place. After which the whole process is reversed. They now disperse and once again need our help to cross back over the busy road and head back to their feeding grounds. Toad patrols have become increasingly popular over the last few years and volunteers now save over 100,000 toads each year. That's a huge number and have a massive impact on the number of amphibians we have in the UK.
There are still many sites across the UK that are unmanned though or are short of helpers, and reports are sent in from members of the public each year reporting roads that have hundreds of squashed toads on them. Could you spare just a little time to help amphibians in your area?

To find your nearest toad patrol and to get involved simply follow this link and enter your postcode:
Find Your Local Toad Patrol 

Alternatively, you can contact your local amphibian and reptile group directly:
List Of Local ARG Groups


This female Common Frog was found in my garden in mid-October shortly before the weather turned really cold.  It was the largest, fattest Common Frog that I have seen in the UK and will have a strong chance of surviving the winter hibernation having built up such good fat reserves. This large size is partly due to storage of winter fat but is also likely to mean that the female has already developed large numbers of eggs inside her body ready for spawning in the Spring.





All Photographs on this page were taken using:

 Canon 7D & 40D cameras and the Canon 100mm f/2.8IS Macro, Canon 15-85mm f/3.5-5.6 IS, Canon 10-22mm f/3.5-4.5 Wide-Angle and Sigma 14mm f/2.8 Wide-Angle lenses.




 

Make a free website with Yola