365
edits
Blue jay: Difference between revisions
From CreationWiki, the encyclopedia of creation science
Jump to navigationJump to search
→Reproduction
| Line 50: | Line 50: | ||
Blue Jays have only one mate for their entire life. [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] Mating usually starts in May and ends in late summer or early fall. A group of males will follow a female, bobbing their heads up and down, trying to show off. The female then chooses one of them to be her mate. [http://www.wild-bird-watching.com/Blue_Jay.html] Afterwards, the chosen male will provide for his mate by finding food for her and getting suitable twigs for their future nest. [http://www.birdhouses101.com/blue-jay-Nesting.asp] | Blue Jays have only one mate for their entire life. [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] Mating usually starts in May and ends in late summer or early fall. A group of males will follow a female, bobbing their heads up and down, trying to show off. The female then chooses one of them to be her mate. [http://www.wild-bird-watching.com/Blue_Jay.html] Afterwards, the chosen male will provide for his mate by finding food for her and getting suitable twigs for their future nest. [http://www.birdhouses101.com/blue-jay-Nesting.asp] | ||
[http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html]They breed in gardens, farms, forests, or parks. [http://www.nrri.umn.edu/mnbirds/accounts/BLJAa2.htm] Their nests are built in trees or shrubs about 8-30 feet off the ground using twigs, bark, weeds, feathers, grass, roots, and whatever else they can find. They have also been known to have something white on the outside of the nest. It can be a candy wrapper, piece of bark, a paper towel they've found, or a white leaf. [http://www.birdhouses101.com/blue-jay-Nesting.asp] | [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html]They breed in gardens, farms, forests, or parks. [http://www.nrri.umn.edu/mnbirds/accounts/BLJAa2.htm] Their nests are built in trees or shrubs about 8-30 feet off the ground using twigs, bark, weeds, feathers, grass, roots, and whatever else they can find. [http://www.birdhouses101.com/blue-jay-Nesting.asp] The inside of the nest is lined with mud and feathers and is about 10cm across. The total diameter of the nest is about 18cm. [http://www.shawcreekbirdsupply.com/blue_jay_info.htm] They have also been known to have something white on the outside of the nest. It can be a candy wrapper, piece of bark, a paper towel they've found, or a white leaf. [http://www.birdhouses101.com/blue-jay-Nesting.asp] | ||
They lay about 3-7 blue-green eggs at a time. [http://www.enchantedlearning.com/subjects/birds/printouts/Bluejayprintout.shtml] They eggs can be a variety of glossy colors like pink, blue, green, or olive with brown or purple speckles. [http://www.all-birds.com/Blue-Jay.htm] | They lay about 3-7 blue-green eggs at a time. [http://www.enchantedlearning.com/subjects/birds/printouts/Bluejayprintout.shtml] They eggs can be a variety of glossy colors like pink, blue, green, or olive with brown or purple speckles. [http://www.all-birds.com/Blue-Jay.htm] | ||
After the eggs are layed, they are incubated mainly by the mother for 18 days. The mothers shed the feathers off a part of their stomache called the incubation patch. The area is filled with small blood vessels and provides heat for the eggs or young fledges. [http://www.birdhouses101.com/blue-jay-facts.asp] The baby birds are closely watched by their parents until they leave their nest at about 2 months old. The fledgings can feed themselves at 3 weeks old | After the eggs are layed, they are incubated mainly by the mother for 18 days. The mothers shed the feathers off a part of their stomache called the incubation patch. The area is filled with small blood vessels and provides heat for the eggs or young fledges. [http://www.birdhouses101.com/blue-jay-facts.asp] | ||
After the eggs hatch, the young is helpless, vulnerable, and without feathers. After about 17 days they have all their feathers and at 21 days of age they are able to leave the nest. The baby birds are closely watched and fed by their parents until they leave their nest at about 2 to 4 months old. The fledgings can feed themselves at 3 weeks old though they still follow their parents around. [http://www.shawcreekbirdsupply.com/blue_jay_info.htm] | |||
[http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] The young birds look close to the adults except that they are lighter in color: their blue feathers are more gray and their black feathers are more brown. [http://www.all-birds.com/Blue-Jay.htm] They can start mating withing the first year of their birth. The average lifespan for living in the wild is about 17 years. [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] | [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] The young birds look close to the adults except that they are lighter in color: their blue feathers are more gray and their black feathers are more brown. [http://www.all-birds.com/Blue-Jay.htm] They can start mating withing the first year of their birth. The average lifespan for living in the wild is about 17 years. [http://animaldiversity.ummz.umich.edu/site/accounts/information/Cyanocitta_cristata.html] | ||
