英文關鍵字
39aph39
accipiter
adept
averaging
birds
branch
broadleaved
canada
capture
clutch
conifer
conifers
construct
coopers
cover
day
deciduous
dense
dominated
finches
flying
forest
great
group
hawk
hawks
holding
icterids
larger
majority
males
navigating
neotropical
nest
nuthatches
oaks
occurs
prey
quickly
range
recorded
sharpshinned
size
small
smallest
songbirds
sparrows
species
states
stick
striatus
surprise
thickets
thrushes
tiny
trees
types
typical
united
vegetation
wide
windy
woodwarblers
woodland
wrens
young