Most hummingbirds exhibit sexual dimporphism meaning that the male looks different than the female. Most male hummingbirds are much more brightly colored than their mates. Females tend to be very drabbly colored so that they blend into their surroundings better. Blending in is particularly helpful when the female is sitting on a nest. If she were brightly colored like a male, she would draw attention to herself and risk putting herself and her chicks in danger.
males that are much larger than females
The males only have blue beaks during the summer. Since summer and spring is their breeding time, I guess it's to attract mates or to let the females know that they are males, but they have many other ways to let the females know they are males.
I am a male but I'll have to be honest. The answer to this question is that this is the difference of hormones which makes men/males so angry and aggressive. And also i want to say that the females have more maturity than males because the puberty in women/females starts earlier than males, and as you know puberty is a step to maturity and responsibilities.
the males compete to fertilize
Yes, but mostly males. Males attack each other unusually to take over another males pride. Also, when new males take over the pride they kill the cubs for the females to reproduce them. Also, males fight over females. Also females attack males and other females to steal meals or just to show off. so that's why lions do attack other lions or lionesses.
Yes, but unlike with mammals, in the case of birds females have XY, and males have XX. With mammals like us males have XY and females have XX.
the males compete to fertilize
The females choose mates. (Apex)
Males that are much larger than females.
In many birds the males have more beautiful colors than females because the females don't need them. The males use them to scare off other males and to attract females. The females don't need them for anything.
This is general sexual selection of males by females.
As with most birds the males are brightly colored to attract the females.
Yes, the females will know when they are pregnant. Other females will know too if they are housed together. The males will know because the pregnant female will have nothing to do with the males if she is pregnant.
I would say, For males = for large males 180, for small males, 165 For females = for large females 150, for small females 140 I have know dozens of people under to these numbers, and they looked great!
males that are much larger than females
Ricky would have counted 36 adult female birds. . out of 88, 16 were babies and the rest were adults. so 88-16=the number of adult birds = 72 if there was the same number of females as there were males, 72 divided by 2 is 36 so there are 36 females, 36 males and 16 babies (all add up to 88) so the answer is 36
Moas were peaceful giant birds. Females grew larger than males and recent discoveries suggest the males performed loud mating calls to attract females. The females would lay eggs that the male would fertilize.