Sentence examples for yellow colouration from inspiring English sources

In fledglings, evidence in favour of a signalling function is even scarcer, as parents do not seem to discriminate between nestlings based on their yellow colouration [ 30], and nestling survival is unrelated to their colour [ 31].

Additionally, in order to show the pattern of variation beyond the range of colouration of blue and great tits, we include reflectance measurements of the greenfinch (Carduelis chloris) which possesses more intensely coloured green and yellow plumage patches than the tit species, and where yellow colouration is more sensitive than green colouration to carotenoid-availability during moult [ 13].

Yet when the percentage of lead is high, a yellow colouration may appear which hinders the end point detection.

"Many people will have had babies with jaundice, but this is chemically-induced yellow colouration of the skin".

When dealing with DPPH radical scavenging activities on the basis of degree of color changes extracts are considered to have high or significant capacity when showed strong intensity of yellow coloration, moderate when showed moderate intensity of yellow colouration, and low capacity when showed moderate intensity of yellow colouration.

It may show a cream, peach or yellow colouration, but it can also sometimes be tinged with a deep magenta, shading almost to red.

Furthermore, our experiments indicate that, at least for the blue tit, the yellow breast colouration and the green back colouration are both strongly affected by carotenoid availability during moult (Table 2).

Conversely, sexual dichromatism in yellow tail colouration was marked in greenfinches where males had more intense colouration than females.

In blue and great tits, yellow breast colouration was more intense in adults than in fledglings, while there was little sexual dichromatism in adults.

An example of the latter is the yellow ventral colouration of great tits (Parus major) and blue tits (Cyanistes caeruleus), that are popular model systems for the study of carotenoid-based ornamental plumages.

Accordingly, Fitze & Tschirren [ 31] did not find any relationship between natural variation in yellow ventral colouration of great tit fledglings and survival or recruitment, which could have been expected if coloration correlates with predation risk.