...it is best to include them also in this class. It is a suggestive fact that all the brightly colored birds mentioned above build in holes or form covered...believe to be one of the chief causes of the dull color of female birds when their partners are gayly colored. This subject is fully argued in my Contributions,...

...is best to include them also in this class. It is a suggestive fact, that all the brightly coloured birds mentioned above build in holes or form covered...plants and flowers are very different from those of annuals both in their distribution and functions, it will be well to treat them separately : we will...

...is best to include them also in this class. It is a suggestive fact, that all the brightly coloured birds mentioned above build in holes or form covered...are gaily coloured. This subject is fully argued in Щ Contributions, &c., chapter vii. As the colours of plants and flower.are very different from those...

...is best to include them also in this class. It is a suggestive fact, that all the brightly coloured birds mentioned above build in holes or form covered...breeding season, which I believe to be one of the chief cause« of the dull colour of female birds -when their partners are gaily coloured. This subject is...

...in the atmosphere, producing a much larger yield of CO2. It is this last factor, in a modified form, which I believe to be one of the chief causes of the phenomena observed. It should be noted that these hypotheses, and others which were considered and...

...Lories, Tits, and Starlings ; among insects most of the largest and handsomest butterflies," etc. " It is a suggestive fact that all the brightly-coloured...female birds when their partners are gaily coloured." (4) Sexual Colours, comprising those cases in which the sexes differ, and with which Darwin's theory...

...Toucans, Lories, Tits, and Starlings ; among insects most of the largest and handsomest butterflies," etc. "It is a suggestive fact that all the brightly-coloured...the dull colour of female birds when their partners ore gaily coloured." (4) Sexual Colourt, comprising those cases in which the sexes differ, and with...

...Starlings ; among insects most of the largest and handsomest butterflies," etc. "It is a suggestive fact X" that all the brightly-coloured birds mentioned above...female birds when their partners are gaily coloured." (4) Sexual Colours, comprising those cases in which the sexes differ, and with which Darwin's theory...

...conspicuously coloured in both sexes, and for whose particular colours we can assign no function or use.1 It comprises an immense number of showy birds, such...are gaily coloured. This subject is fully argued in chapter vi. of the present volume. Leaving the colours of flowers to be discussed in another chapter,...

...starlings ; among insects most of the largest and handsomest butterflies, innumerable brightx;oloured beetles, locusts, dragonflies, and hymenoptera ; a...are gaily coloured. This subject is fully argued in chapter vi. of the present volume. Leaving the colours of flowers to be discussed in another chapter,...