Sharing some test shots using the 70-300mm VR + Kenko 1.4x TC combo ...
[1] Common Iora
[2] Common Myna (just after bath)
[3] Stork-billed Kingfisher (ever so calm and focused)
[1] Common Iora
[2] Common Myna (just after bath)
[3] Stork-billed Kingfisher (ever so calm and focused)