Ce sont les mots les plus souvent utilisés dans ce livre.
able
adults
although
among
another
approach
areas
attempt
behavior
better
between
bill
birds
body
breeding
brood
calls
cardinals
copulations
days
display
during
early
eggs
energy
example
factors
feathers
feeding
females
first
fledglings
flocks
food
found
habitat
hours
however
important
including
increase
individuals
larger
later
less
likely
little
location
males
mates
may
must
nest
nestlings
new
northern
occur
often
pair
parents
particularly
percent
period
plumage
potential
predators
probably
produce
provide
quality
range
rates
red
result
revealed
season
seeds
several
shrubs
sing
singing
sites
sometimes
song
species
studies
temperature
territories
time
trees
two
types
typically
use
used
usually
wings
winter
year
young