found this hummingbird on the Rhazya stricta plant from the Apocynaceae family, but I'm curious about the antenna on its head! Is it really a hummingbird?
No Sir Arvind Singh . It is Hyles livornica (Esper, 1780) and the species is very much relted with Rhazya stricta (Apocynaceae), a potential larval host plant for the species. It is not Hippotion celerio (Linnaeus, 1758). Please check original descriptions as well.