How long do bird eggs take to hatch?

How long do bird eggs take to hatch?

Different bird species lay different sized eggs. Large birds lay larger eggs than smaller birds.

The chicks of larger bird species usually take longer to hatch than the chicks of smaller bird species.

Some examples include the following:

The Ostrich is the the largest bird in the world and its egg is the largest bird egg in the world. It measures about 15 centimetres (6 inches) long. The egg takes about 35-45 days to hatch.

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RESEARCH: The Hummingbird is the most colourful bird in the world

A research study published in June 2022 in the Communications Biology journal found that the Hummingbird species, collectively, is more colourful than any other type of bird.

One way to measure colourfulness is to consider the theoretical total number of colours a bird can detect, and then estimate how many of these colours are produced on the feathers of the bird. Most birds can see more colours than humans can see because birds have extra receptors in their eyes to detect light in the ultraviolet (UV) spectrum of colour. Using this method, a 2011 study published in the Behavioral Ecology journal by researchers from the University of Cambridge in the United Kingdom and Yale University in America, found that birds typically produce on their feathers only about 30% of the colours they see. 

In this new 2022 study, Gabriela Venable at the Duke University in North Carolina, America, and her researchers, looked at 114 species of Hummingbirds. It is the first time that a group of related birds have been studied in relation to colourfulness.

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African Black Swift

The African Black Swift (Apus barbatus) is a small passerine bird in the Apodidae family of swifts. It is highly aerial, spending most of its life in the air. It is not related to swallows; it is in the same Order as hummingbirds.

The African Black Swift is black-brown except for a small, white or pale-grey patch on its chin. It has a short, forked tail. It has long, swept-back wings, which can rotate at the base (like hummingbird wings). It has short legs.

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Scarlet Honeycreeper

The Scarlet Honeycreeper (Drepanis coccinea orVestiaria coccinea) is a small bird in the hummingbird family. It is also known as the I’iwi. It was previously categorized as Vestiaria coccinea, but taxonomists changed the classification to Drepanis coccineain 2015. 

The Scarlet Honeycreeper is mostly scarlet with black wings and a black tail. It has a long, decurved, pinkish beak. 

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