Rana arvalis 1, Heikikker, Saxifraga-Bas Klaver Rana arvalis 2, Heikikker, Saxifraga-Hans Dekker Rana arvalis 3, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 4, Heikikker, Saxifraga-Edo van Uchelen
Rana arvalis 5, Heikikker, Saxifraga-Luc Hoogenstein Rana arvalis 6, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 7, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 8, Heikikker, Saxifraga-Kees Marijnissen
Rana arvalis 9, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 10, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 11, Heikikker, Saxifraga-Luc Hoogenstein Rana arvalis 12, Heikikker, Saxifraga-Luc Hoogenstein
Rana arvalis 13, Heikikker, Saxifraga-Hans Dekker Rana arvalis 14, larva, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 15, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 16, Heikikker, male, Saxifraga-Edo van Uchelen
Rana arvalis 17, Heikikker, Saxifraga-Edo van Uchelen Rana arvalis 18, Heikikker, Saxifraga-Edo van Uchelen Rana arvalis 19, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 20, Heikikker, Saxifraga-Kees Marijnissen
Rana arvalis 21, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 22, Heikikker, Saxifraga-Kees Marijnissen Rana arvalis 23, Heikikker, Saxifraga-Kees Marijnissen Heidekikker  Heidekikvors bij Gortel in het Kroondomein : Rana arvalis
Heidekikker  Heidekikvors bij Gortel in het Kroondomein : Rana arvalis Heidekikker  Heidekikvors bij Gortel in het Kroondomein : Rana arvalis Heidekikker  Heidekikvors bij Gortel in het Kroondomein : Rana arvalis Heidekikker  Heidekikvors bij Gortel in het Kroondomein : Rana arvalis
Rana arvalis 29, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 30, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 31, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 32, Heikikker, Saxifraga-Rudmer Zwerver
Rana arvalis 33, male, Heikikker, Saxifraga-Hans Dekker Rana arvalis 34, juvenile, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 35, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 36, Heikikker, Saxifraga-Rudmer Zwerver
Rana arvalis 37, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 38, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 39, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 40, Heikikker, Saxifraga-Rudmer Zwerver
Rana arvalis 41, male, Heikikker, Saxifraga-Hans Dekker Rana arvalis 42, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 43, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 44, Heikikker, Saxifraga-Rudmer Zwerver
Rana arvalis 45, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 46, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 47, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 48, Heikikker, Saxifraga-Mark Zekhuis
Rana arvalis 49, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 50, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 51, Heikikker, Saxifraga-Mark Zekhuis Rana arvalis 52, Heikikker, Saxifraga-Mark Zekhuis
Rana arvalis 53, Heikikker, Saxifraga-Rudmer Zwerver Rana arvalis 54, male, Heikikker, Saxifraga-Hans Dekker Rana arvalis 55, Heikikker, Saxifraga-Tom Heijnen Rana arvalis 56, Heikikker, Saxifraga-Tom Heijnen
Rana arvalis 57, Heikikker, Saxifraga-Tom Heijnen Rana arvalis 58, Heikikker, Saxifraga-Tom Heijnen Rana arvalis 59, Heikikker, Saxifraga-Jan Nijendijk Blue Moor frog in breeding habitat  Blue Moor frog (Rana arvalis) in breeding habitat. Males can develop bright blue coloration for a few days during the breeding season in march or april. : Netherlands, amphibian, animal, animals, april, arvalis, background, beautiful, blue, bluish, brown, closeup, colorful, conservation, cute, ditch, environment, europe, exotic, fauna, fresh, frog, grass, green, habitat, holland, land, male, march, marsh, mating, moor, moorfrog, natural, nature, one, pond, rana, ranidae, reproduction, reserve, river, season, spawning, spring, view, water, wetland, wild, wildlife
Blue Moor frog with distictive lining on back  Blue Moor frog (Rana arvalis) with distictive lining on back. Males can develop bright blue coloration for a few days during the breeding season in march or april. : Netherlands, amphibian, animal, animals, april, arvalis, background, beautiful, blue, bluish, brown, closeup, colorful, conservation, cute, environment, europe, exotic, fauna, fresh, frog, grass, green, holland, land, male, march, marsh, mating, moor, moorfrog, natural, nature, one, pond, portrait, rana, ranidae, reproduction, reserve, river, season, semiaquatic, shiny, spawning, spring, view, wetland, wild, wildlife Moor frog couple submersed in water  Moor frog (Rana arvalis) couple in amplexus mating position in the reproduction season submersed under water : Netherlands, amphibian, amphibians, amplexus, animal, arvalis, blue, bluish, brown, closeup, conservation, couple, cute, europe, fauna, female, frog, frogs, head, male, mating, moor, moorfrog, natural, nature, pair, pairing, pond, portrait, rana, ranidae, reproduction, science, season, semiaquatic, spawn, spawning, spring, submersed, summer, tadpole, two, under, water, waterline, weather, wet, wetland, wild, wildlife