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Bernard Kettlewell
Bernard Kettlewell
Image: Biston.betularia.7200
Image: Biston.betularia.7200
Image: Biston.betularia.f.carbonaria.7209
Image: Biston.betularia.f.carbonaria.7209
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Intermediate insularia form (between pale typica and dark carbonaria in tone) of peppered moth on a lichen-covered birch tree: Bernard Kettlewell coun
Intermediate insularia form (between pale typica and dark carbonaria in tone) of peppered moth on a lichen-covered birch tree: Bernard Kettlewell counted the frequencies of all three forms.
Tree bark covered in shrubby and leafy lichens forms a patterned background against which non-melanic disruptively patterned moth camouflage is effect
Tree bark covered in shrubby and leafy lichens forms a patterned background against which non-melanic disruptively patterned moth camouflage is effective.
Image: Odontopera bidentata, Scalloped Hazel, Trawscoed, North Wales, June 2016   Flickr   janetgraham 84
Image: Odontopera bidentata, Scalloped Hazel, Trawscoed, North Wales, June 2016 Flickr janetgraham 84
Image: Odontopera bidentata (7275071212)
Image: Odontopera bidentata (7275071212)