TY - RPRT TI - The devil in citizen science data: observation processes invalidate the causal inference that photovoltaic policy reduces bird diversity AU - Chen, Y. AU - Zhang, W. AU - Zou, H.-X. AU - Shi, X. AU - Liu, Y. PY - 2026 DO - 10.64898/2026.08.25.746390 UR - https://www.biorxiv.org/content/10.64898/2026.08.25.746390v1 ID - 10.64898/2026.08.25.746390 ER -