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  2. Parental care in birds - Wikipedia

    en.wikipedia.org/wiki/Parental_care_in_birds

    Female birds are able to produce more of a certain gender of birds that are more likely to survive under extreme conditions. In birds, the females' egg determines the gender of the offspring, not the male's sperm. In zebra finches, a study showed the effect of food on gender ratio production. For females, egg production is a metabolically ...

  3. Bird anatomy - Wikipedia

    en.wikipedia.org/wiki/Bird_anatomy

    Vocal Bird anatomy: Birds produce sounds through the air that passes through the Syrinx, which is shown close up in the bottom right. In order for birds to produce sound, they use an organ located above the lungs called the syrinx , which is composed of tracheal rings, syringeal muscles, Tympaniform membrane, and internal bony structures that ...

  4. Gorgeous Snow White Mare Gives Birth to Pure Black Colt with ...

    www.aol.com/gorgeous-snow-white-mare-gives...

    The birth of a baby is always a day to celebrate, even if you're a mama mare! One woman is celebrating big time after her white mare gave birth to the most beautiful black colt. What a pair!

  5. Weaning - Wikipedia

    en.wikipedia.org/wiki/Weaning

    Weaning in horses usually takes place when the foal is 4 to 5 months old, [30] as by this point the foal no longer needs nutrients beyond what the mare offers. [31] Prior to weaning the foal, there is usually a creep feeder set up to allow the foal to begin consuming feed that the mare cannot access. [ 31 ]

  6. Animal embryonic development - Wikipedia

    en.wikipedia.org/wiki/Animal_embryonic_development

    Depending on the animal species, the process can occur within the body of the female in internal fertilization, or outside in the case of external fertilization. The fertilized egg cell is known as the zygote. [2] [5] To prevent more than one sperm fertilizing the egg , fast block and slow block to polyspermy are used. Fast block, the membrane ...

  7. Can chickens fly? Here's everything to know about the bird's ...

    www.aol.com/chickens-fly-heres-everything-know...

    In the U.S., there are around 85 million backyard chickens, making the bird the third most popular pet in the nation, ... Female passenger killed after being set on fire on an NYC subway train. News.

  8. What is baby-led weaning and when is the best time to start?

    www.aol.com/lifestyle/baby-led-weaning-best-time...

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  9. Blue-footed booby - Wikipedia

    en.wikipedia.org/wiki/Blue-footed_booby

    The female blue-footed booby lays two or three eggs, about four to five days apart. Both male and female take turns incubating the eggs, while the nonsitting bird keeps watch. Since the blue-footed booby does not have a brooding patch, it uses its feet to keep the eggs warm. The incubation period is 41–45 days. Usually, one or two chicks are ...