Sentence examples for colouration are from inspiring English sources

Second, male attractiveness and several components of male colouration are genetically correlated with one another and with mating success [ 15, 24].

Although pigmentation and colouration are mentioned in most staging tables, some authors refer to first occurrence of pigment cells that are hard to see in photographs and in embryos that have been fixed for a long time.

Such sister species pairs with differing male upperside colouration are also found in Agrodiaetus, e.g. A. fabressei/fulgens, A. shahrami/achaemenes, A. erschoffii/caeruleus and A. hopfferi/lycius (fig. 3).

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).

As yellow and green blue tit colouration are strongly affected by carotenoid availability during moult, variation in pigment availability between habitats may affect the degree of background-matching or the costliness of producing cryptic plumage.

Their colouration is determined by ontogenetic colour changes during moulting.

"We know that pairing a bright colour with a chemical defence (warning colouration) is a good idea because it teaches predators not to attack", said Dr Rowland.

The filmmakers strove for authenticity and realism in the images, and as such little colouration was added after, and the natural contrast of colours between the locations in Washington and Morocco were allowed to show through.

At the end point the blue colouration was seen to change to a sharp red wine colour.

At the same time, tarsus colouration was also a dynamic trait because the variability in tarsus colour reflected differences in plasma carotenoid levels both among and within individuals.

This link between environment and colouration is called countershading.