Great crested grebe, (Podiceps cristatus), brooding female chasing intruding pair away from nest, on lake, Lower Saxony, Germany

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Size: 4584px × 3056px
Photo credit: © Duncan Usher / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aggressive, behavior, breeding, crested, defensive, female, great, grebe, intruders, intruding, lake, nest, pair, territorial, territory, threatening