When there is a sexual difference in bird plumage, it is usually the males that are the grandiloquent ones. This is apparently the result of sexual selection. Females prefer the strongly patterned and brightly coloured males variously as an indication of health, an ability to provide, and an ability to protect nesting territory. An example of the ability to provide was discussed in red and ready. The kingfisher seems to be a deviation from this pattern.
The three male birds shown below were observed today and yesterday.
This male Hooded Merganser has striking plumage, while its mate is a somewhat dowdy brown.
This Pine Grosbeak, picking rowan berries off the ground, has standout colouring.
The male Belted Kingfisher seems to be an exception for its mate is grander, having a bright orange band across her breast (second of two birds). However, we may not be seeing everything that a bird does. Birds can see in the ultraviolet and show plumage variation at those wavelengths. So, it is unclear what this male looks like to a female.
splendid pictures. The kingfisher is certainly more subdued but more elegant perhaps?
Thanks again . Irene McI