As someone who is part portuguese I can tell you Portugal is definitely underrated from a birding perspective, but Spain is definitely in the lead (and given our centuries long rivalry, I don't say this lightly).
The south all the way up to just next to Lisbon is great for late winter. The far south is also great for spring and autumn migration.
If you're speaking to the culture and history, I can only say good things about Portugal. Great food, nice people, rich history, and all of this in a small and accessible package. You just need to skip the horrendously touristy areas in the south.
If you ever find yourself planning a trip this way feel free to hit me up, I'd be happy to give some pointers!










Thanks, I hadn't thought of monoculars but that might work. I've used thermal monoculars before so I know eye fatigue can be a concern but if it's for short trips I can see it working for absolute beginners. Any particular brands you think might be cheap but reliable?