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In many species, parents continue to care for their fledged young, either by leading them to food sources, or feeding them. Birds are vulnerable after they have left the nest, but before they can fly, though once fledged their chances of survival increase dramatically. [5] A pigeon fledgling on a tiled floor
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 ...
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Precocial birds find their own food, sometimes with help or instruction from their parents. Examples of precocial birds include the domestic chicken, many species of ducks and geese, waders, rails, and the hoatzin. Precocial birds can provide protein-rich eggs and thus their young hatch in the fledgling stage – able to protect themselves from ...
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A baby kangaroo, known as a joey, inside their mother's pouch. Altricial young are born deaf, blind, almost completely hairless and have very limited motor functioning. [1] The maternal behavior in these species is primarily focussed on providing warmth for the young since they are unable to thermoregulate. [4]
The hatchling is put into danger and cries out for his mother quickly. At that moment, the steam shovel drops the hatchling into his nest, and his mother returns. The two are reunited, much to their delight, and the baby bird recounts to his mother the adventures he had looking for her, saying "You're not a kitten, you're not a hen," etc.
Common cuckoos in their first autumn have variable plumage. Some have strongly-barred chestnut-brown upperparts, while others are plain grey. Rufous-brown birds have heavily barred upperparts with some feathers edged with creamy-white. All have whitish edges to the upper wing-coverts and primaries. The secondaries and greater coverts have ...