Wildlife of Britain

The Complete Life Cycle of a Tadpole: From Egg to Frog The life cycle of a tadpole is one of the most fascinating transformations in the natural world.  This process, known as metamorphosis, takes an aquatic, gill-breathing larva and turns it into a land-dwelling adult amphibian. In the UK, this cycle is commonly observed in species such as the common frog and the common toad. Understanding each stage reveals how sensitive amphibians are to environmental conditions—and why their survival depends on healthy freshwater habitats. What Is a Tadpole? A tadpole is the larval stage of an amphibian, typically frogs and toads. At this stage, the animal is fully aquatic, equipped with gills for breathing and a long tail for swimming. Unlike adults, tadpoles initially resemble small fish more than frogs, lacking legs and lungs. Stage 1: Eggs (Spawn) The life cycle begins in water, where adult amphibians return to breed in spring. • Frogs lay eggs in large clumps known as spawn • Toads lay egg...

The Natterjack Toad   The Natterjack toad (Epidalea calamita) is one of Britain’s rarest amphibians and a distinctive member of the toad family.  Smaller and more lightly built than the common toad, it is best known for the bright yellow stripe running down the centre of its back and also for its rasping, far-carrying call of the males during the breeding season.  In the UK, the species has a restricted distribution and is the focus of significant conservation efforts. Identification and Physical Characteristics Adult natterjack toads typically measure 6–7 centimetres in length, making them noticeably smaller than the common toad.  Their skin is warty and olive or greyish-green, often patterned with darker blotches. But the most reliable field mark is the narrow yellow line that runs along the spine (although this stripe can sometimes be faint). Another distinctive feature the natterjack has is its relatively short hind legs. As a result, it does not hop in long leap...