Why birds lay different COLOURED EGGS?

From bright blue, to dark Red, there is a massive variety in the colours and patterns found on birds eggs. In this video I will try to show you why different species of birds lay different coloured eggs.

Some of the footage used in this video was filmed by @birdsnestsnature, visit their channel to see the original footage.

Some of the other footage and images used were obtained using creative commons licences. The originals and their licence details can be found at:
https://www.youtube.com/watch?v=Xf_IbbOKaZE
https://www.youtube.com/watch?v=t3_NHtckCdU
https://commons.wikimedia.org/wiki/File:Cal_Falcons_-_Grinnell_in_Nest_Box.png
https://commons.wikimedia.org/wiki/File:Eggs_Numenius_arquata.jpg
https://commons.wikimedia.org/wiki/File:Song_Thrush_Nest_01-04-11_%2826.4_mm_x_20.8_mm_Egg_Size%29_%285580096258%29.jpg
https://commons.wikimedia.org/wiki/File:Dunnock_%28Hedge_Sparrow%29_Nest_11.04.11.jpg
https://commons.wikimedia.org/wiki/File:Bullfinch_Nest_16-05-10_%2820_mm_x_14.5_mm_Egg_Size%29_%284612522613%29.jpg
https://commons.wikimedia.org/wiki/File:Reed_Warbler_Nest_10-06-12_%287173408749%29.jpg
https://www.youtube.com/watch?v=7e203RsgG14
https://www.youtube.com/watch?v=4NZBreUdiOQ
https://www.youtube.com/watch?v=AIvWs9W0NLQ
https://www.youtube.com/watch?v=ZkSQdycKscY
https://www.youtube.com/watch?v=izWBXoo9jYE
https://www.youtube.com/watch?v=gHK4qZePEOY
https://www.youtube.com/watch?v=MfJmun3zu34
https://www.youtube.com/watch?v=U0Uz-sJUtNQ
https://www.youtube.com/watch?v=tGVDr2Dx_1c
https://www.youtube.com/watch?v=8zJnQzArCzE&t=132s
https://www.youtube.com/watch?v=PPCPrp_RiyA
https://www.youtube.com/watch?v=1EqoedQF2Lk
https://www.youtube.com/watch?v=iw4P9XQeTeM
https://www.youtube.com/watch?v=9oJNCanntuo
https://www.youtube.com/watch?v=PbSqDiqjJ7I
https://www.youtube.com/watch?v=at5go-cg9A8
https://www.youtube.com/watch?v=no83dF8UZgg
https://www.youtube.com/watch?v=4sawTYHotfY
#birdfacts #eggs #naturefacts
https://www.youtube.com/watch?v=y5LOMKTdXB0
https://www.youtube.com/watch?v=iM7QJbPWugk&t=129s
https://www.youtube.com/watch?v=i1p02fdva2g
https://www.youtube.com/watch?v=HqZ4x9rR0LM
https://www.youtube.com/watch?v=sMfyHOctTR8
https://www.youtube.com/watch?v=44Uc-8tG1_U
https://www.youtube.com/watch?v=QLbqmuH9nlU&t=41s
https://www.youtube.com/watch?v=tENpIIzVc70
https://www.youtube.com/watch?v=JX-FvYV6Dwg
https://www.youtube.com/watch?v=wgHwXAu1zmQ
https://www.youtube.com/watch?v=G8GzmRYEhro
https://www.youtube.com/watch?v=8w-0JTTrQcA
https://www.youtube.com/watch?v=rIuDq_zwbWk
https://www.youtube.com/watch?v=5F8HZ9dYVEk
https://www.youtube.com/watch?v=drB-E15-ivk&t=186s
https://www.youtube.com/watch?v=nGlhWUa_wVs
https://www.youtube.com/watch?v=b0172SV2-TI
https://www.youtube.com/watch?v=LCJ6BM1dyNg
https://www.youtube.com/watch?v=s_Xr4-sBfJk