These designs, for both companies, were registered in 1880 and 1881.

The Nile Street Pottery in Burslem was occupied by Thomas Pinder.
In 1851, the style became Pinder, Bourne & Hope.
By 1862, the firm was renamed Pinder, Bourne & Co.
Henry Doulton bought into the firm in 1878; however, the name was not changed until 1882 when Doulton took over fully.
The Nile Street factory was where Henry Doulton learned the pottery business, spending 5 years working and observing the production of Pinder, Bourne & Co.

Pinder Bourne's 1880 design Water Hen

Doulton's 1880 design Water Hen