Birds don't have fins as fins are for swimming in water. One could argue that they have scales on their feet as the skin there is tough and 'scaly' but there is not an overlapping matrix of scales like their would be in reptiles.
Fins.
no some have wings
Fins are small aerodynamic wings attached to the rear of the rocket. These are to give guidance and stop it from spinning.
Their arms, legs, tails,wings or fins.
the body parts are eyes and fins
no thay dont thay have wings
fins wings leg
Three examples of analogus structures. 1) Shark fins versus dolphin fins 2) Moth wings versus bird wings 3) Octupus eye versus human eye
Triceratops was a quadrupedal land animal. It didn't have wings or fins, and technically the end of the forelimb is a foot, not a hand, unless the animal is at least partly bipedal. Its front feet each had three toes.
It helps to stabilize them. Without fins/wings the tail will ocilate causing it to vear off course and lose speed and range.
its fins have (special) fairy wings inside
to make it easier for them to swimthe simple answer is they help them fly in there fishy dreams, let me explain they used to be wings but as they evolved, fish became more adapted to the water and less to the air so there "wings" fused together over time and they became fins.