'At night hummingbirds enter torpor, a short version of this, in which temp. lowers & metabolism slows'
hibernation
HUMMINGBIRDS: At night hummingbirds enter torpor, a short version of this, in which temp. lowers & metabolism slows
At night hummingbirds enter torpor, a short version of this, in which temp. lowers & metabolism slows
At night hummingbirds enter torpor, a short version of this, in which temp. lowers & metabolism slows
HUMMINGBIRDS
hibernation
HUMMINGBIRDS