both gray squirrels and black squirrels are normaly found in the same place at the same time but there not as common as the non black squirrels. theres also leucistic squirrels aswell. again they arnt as common as non leucistic squirrels. both non black and the black gray squirels were introduced from North America which is there native range. -
native means a species is in a country it origionates from. it has allways been in that country and not from any other country.
. a non native species is one who is from a different country to the one it is currently in
for instance the california poppy can be found in many places all over the world but its home - where it origionated from is california. in california it is a native species cause it was origionaly born there and its allways lived there. in other countrys it is considered a non native species cause it didnt come from those countrys and it didnt live in those countrys.
the gray squirrel both black and leucistic and non black and non leuictic havnt allways been in the uk which makes them not native (non Native) species
if a species has been brought over to a country it didnt used to live in by any means its called introduced. the gray squirrels are not native to the uk and they didnt come over by themselfs but by human infuence so they were introduced here so they are a introduced species in the uk cause they were( brought over) from north America years ago.
