Their wings
Well, obviously, most flying birds are able to generate at least as much thrust as is their body weight. But most birds are unable to take off in vertical flight - so that modest thrust is about the limit for most birds. Indeed, few birds can manage vertical flight with a sustained ascent. In New Zealand, we have a native pigeon, Kereru, which loves a matai berry - about the size of an acorn. These they eat in sufficient quantity such that they cannot even maintain level flight!
Birds use the four forces of flight kind of like an airplane does. Lift pulls them up and weight pulls them down. Thrust pulls them up and drag pulls them down.
Weight and lift are two forces that affect a bird's flight. Two other forces are drag and thrust.
Thrust Capacity is how much thrust it can take :D
Jaw-Thrust Technique
The angle at which you thrust.
there is no thrust lake.
It can be as in "He thrust his sword into his enemy", however it can also be a noun as in "The thrust of the rocket was enormous".
A forward thrust city is a city that has been thrust forward into things
while flapping a eagles wings eagles propel themselves forward.This propulsion is the force of thrust which helps birds maintain forward movement
The past tense of the word "thrust" is "thrust". It remains the same in both present and past tense forms.
THRUST means to push forcefully