Panorama

There's one problem with that - Photomerge adjusts exposure/vignetting differences within the mask (white), but not outside (black). This is the "auto-blend" part of the Photomerge script.

So if you manually modify the masks afterwards, you get these hard-edged tonality jumps that are almost impossible to fix later.

In this case I'd just run "auto-align" (the first half of photomerge), then paint in soft masks manually as needed. These are much easier to correct for varying exposure.

Hi

You do not say how you created your panorama. Try this way:

Use File automate - Photomerge to choose and join your image files.

That will give you several layers with masks built into a single panoramic image.

You will now need to click on each and adjust the mask so that your bird is visible in each image. Paint with white on the mask to make visible and black to hide. (On the latest versions double clicking the mask will open the layer and mask in Select and Mask - if you do this make sure you save your modified mask as "Layer Mask"

Dave