Assertion: nightjar's egg | /r/HasProperty | tinted in colour
Facets:
Source sentences:
text: The birds are seen only with the greatest difficulty as they skulk amongst the heath and other moorland vegetation; the sitting bird upon her nest is one of the most impressive object-lessons in protective coloration that we have, whilst the eggs and chicks themselves are tinted in colours that harmonize most beautifully with the objects around them.