mwsilvers wrote:
I think he means that a "good" all in one lens, that is useful for landscapes, which require wide angles, and birds, which requires telephoto, and which works on both a FF and crop sensor, and costs less than $700 is so full of compromise that if image quality or sufficient reach for birding is a goal, at each stage it's contradicted by the imposed limitations of the selection criteria.
Thank you mwsilvers, detailed it perfectly.
And thank you for continually pointing out to the ignorant rude people who keep recommending crop format lenses that the OP needs the lens to be compatible with a full frame camera.
It is rude and arrogant to not read the question properly, and to give false information because of it.