70In that regard, it is important to note that the evidence that the conditions to be met to derogate from the system of protection of that directive must be based on well-established scientific knowledge (see, to that effect, judgment of 15 December 2005, Commission v Finland, C‑344/03, EU:C:2005:770, paragraph 54 and the case-law cited). The Court has already held that the best relevant knowledge must be available to the authorities at the time they grant the authorisations (see, with regard to protected species covered by the Habitats Directive, judgments of 7 September 2004, Waddenvereniging and Vogelbeschermingsvereniging, C‑127/02, EU:C:2004:482, paragraphs 52 and 61, and of 10 October 2019, Luonnonsuojeluyhdistys Tapiola, C‑674/17, EU:C:2019:851, paragraph 51). Those considerations apply also with regard to Article 9(2) of the Birds Directive.
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