Here are some first names:

Apple
Mouse
Berry
Hazel
Bramble
Leaf
Squirrel
Fire
Gray
Blue
Red
Mist
Speckle
Patch
Spot
Fly
Sky
Wind
River
Shadow
Grass
Stone
Fin
Twig
Violet
Yarrow
Crow
Raven
Nettle
Tree
Bristle
Frog
Eagle
Shell
Stream
Lake
Creek
Oak
Rat
Pine
Rose
Lily
Bubble
Splash
Sand
Dust
Green
Reed
Minnow
Trout
Pike
Jay
Lion
Tiger
Leopard
Sun
Dark
Pounce
Light
Dove
Pigeon
Curl
Pod
Breeze
Heather
Moon
Sun
Dawn
Dusk
Gorse
Marigold
Spotted
Larch
Tawny
Black
White
Storm
Cloud
Bright
Bumble
Blossom
Daisy
Petal
Beetle
Night
Rock
Pebble
Stream
Plum
Alder
Thorn
Birch
Poppy
Cherry
Mole
Cinder
Smoke
Ivy
Stem
Dew
Holly
Fern
Honey
Spark
Sorrel
Bracken
Clover
Puddle
Scorch
Flax
Sparrow
Snow
Ice
Ant
Flower
Snake
Hawk
Sage
Mint
Rabbit
Hare
Nectar
Kestrel
Brindle
Ember
Slight
Oat
Hoot
Whisker
Moth
Willow
Shimmer
Lizard
Toad
Frog
Soft
Dapple
Moss
Feather
Owl