april
beautiful
beauty
betula
betula nigra
birch
bloom
blooming
blossom
blossoms
blue
branch
bright
bud
budding
buds
catkin
catkins
close up
closeup
deciduous
emerging
flower
fresh
golden
growth
leaf
leaves
march
may
newly
north america
outdoors
river birch
river birch tree
season
sky
spring
tree
white
yellow