american southwest
anas acuta
balance
biology
birding
birds
blue
bosque del apache national wildlife refuge
brown
conservation
cranes
ducks
eat
ecology
environment
feed
feeding
flight
flying
grass
gray
grus canadensis
harmony
horizontal
hungry
january
middle rio grande valley
migrating
mixed flocks
natural
nature
new mexico
no people
nobody
northern pintail
ornithology
outdoor
outdoors
overwinter
park
pintail ducks
refuge
rest
resting
sanctuary
sandhill cranes
season
seasonal
species
tan
tourism
tranquil
travel
united states
water
waterfowl
wildlife viewing
wings
winter
wintering