This is a nice Vintage Murano Glass Duck, Fumato Technique, made by V. The dimensions of this piece are 7 1/2" long x 3 1/4" wide x 5 1/2 tall. Thanks to Ebayer who provided us additional information about this item. In the glass world, it describes one colour gradually merging into another, also known as Ombré. This is not the technique used in your glass.
Your duck was made in Murano by V. The interior pattern was made using a pineapple mould to produce the feathered effect. Then smoke was passed over the glass, a technique called Fumato, and then it was cased in clear glass. So, your duck is Murano glass, Fumato technique, made by V. I hope this is helpful. Was a renowned Italian Murano glass company, founded by Vincenzo Nason in 1967 on Murano island, known for its distinctive opaline glass, animal sculptures, and rich'Avventurina' black glass with copper inclusions, operating until its closure around 2001, and representing a significant part of Murano's late 20th-century industrial and artistic glass production before the family business ultimately ceased operations.