Egg coloration in the Reed Warbler Acrocephalus scirpaceus is highly variable. According to Brown and Davies (1949), the majority of eggs are dark olive-brown with browner mottling, often capped dark brown. Krištofik et al. (2013) describe the eggs as heavily spotted on a blue-green background.
During 2005–22, we studied a colour-ringed population of Reed Warblers nesti
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