Types of spawn:

Large gelatinous spawn clumps (black/brown eggs):
True frogs Rana-species
>Metamorphosis-Link

spawn True frogs

Small spawn clumps
(pale grey eggs):
Tree frog Hyla arborea

>Metamorphosis-Link

spawn Tree frog

In long strings (black eggs):
True toads Bufo-species
>Metamorphosis-Link

spawn True toads

In thick strains
(dark grey eggs) :
Common spadefoot Pelobates fuscus
>Metamorphosis-Link

spawn spadefoot

In groups up to 50 eggs or single (brown eggs):
Toads Bombina-species
>Metamorphosis-Link

spawn Red-/Yellow-bellied toads

Separately folded in leaves
(white or bicoloured eggs):
Newts Triturus-species

spawn newts

(Source: W. Engelhardt; Kosmos field guide, modified 1998 and 2000)

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