1/4" Leg Bands for Baby Chicks and Quail

Product states that they are for chicks. Bird in video looks almost full size. Will these expand to grow with the chick?
The video is just a general demonstration on how to put the bands on. Our bands are plastic and will not expand as the birds grow. You would need to change sizes frequently.

How many per package?
Each package of leg bands includes 50 bands of the same size and color --- no numbers are imprinted on the bands.

Are these spiral bands or are these just small rubber bands? Thanks
They are a plastic spiral ring.