Ah, ethical tension. This issue is not linear.
Stressing, harming birds - particularly rarer or declining species - certainly not good overall.
However, not sharing hinders opportunities to train & influence newer birders on how to enjoy rarer species without stressing them.
Perhaps sharing brings responsibility, to know & share good techniques, to discourage and/or report out of bounds behavior, to monitor shared birds.
I like the idea of sharing by request, but be aware that word gets out quickly.
Conversely, there is intense frustration over inexact or tardy sharing.
Perhaps 0% stressing/fatalities is an unrealistic goal, as it is in much of life.
At this point in time I still lean towards sharing, but I'm also hearing people like Bob & Mike.
Just a few thoughts, obviously not all in one direction.
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