Web site: https://www.jennysargeant.com/
This is a 19th Century lace flounce in one circular piece with almost indiscernable join, bobbin lace with a needle lace ground. I think the bird motif is most likely a peace dove and this is most probably an alb flounce. Lace is in the style of 18th Century Milanese lace.
Pale ivory colour. Excellent condition, possibly unused but there is some pale age browning in places.