How Swallows Adapted to Build Mud Nests

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Swallows, martins and saw wings all belong to a family of passerine birds called the Hirundinidae, in which most members can build nests out of mud. These mud nests are usually attached to cliffs, bridges or buildings. Swallows are resourceful little birds, but how did this behavioural adaptation evolve?

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All images and footage within this video are used with a license.

References:
Winkler DW & Sheldon FH. Evolution of nest construction in swallows (Hirundinidae): A molecular phylogenetic perspective. Proc Natl Acad Sci USA 1993;90:5705–5707.
Sheldon FH, et al. Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA sequences. Mol Phylogenet Evol 2005;35:254–270.
Smith CCR, et al. Demographic inference in barn swallows using whole genome data shows signal for bottleneck and subspecies differentiation during the Holocene. Mol Ecol 2018;27:4200–4212.
Heneberg P. Soil penetrability as a key factor affecting the nesting of burrowing birds. Ecol Res 2009; 24:453–459.
Jung Y, et al. Avian mud nest architecture by self-secreted saliva. Proc Natl Acad Sci USA. 2021;118:e2018509118.

Music:
Aurora by Scott Buckley
Luminance by Scott Buckley
Where Stars Fall by Scott Buckley
Passage of Time by Scott Buckley
Titan by Scott Buckley
Age of Wonder by Scott Buckley

#swallow #naturedocumentary #swallownest #birdnest #nature #animals #wildlife #birds

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how does this guy only have 24k subs? I could have sworn I was watching a documentary with millions of views from a big name publisher...

The_Horizon

My house Martins have returned again this year. They have been coming to nest on my house for over 30 yrs. I believe they come from Africa to me here in England. It glades my heart when I see them arrive.

bessiebraveheart

Gorgeous editing, wonderful shots, very good, calm, gentle and informative narration and above all offering a greater picture of what is life as a whole. So glad that this channel is getting recognition, keep it up.

cohorspraetoria

What a lovely documentary, thank you! We enjoy our swallows coming back to nest in our barn each year...

alicegobelin

Purple Martin's here in north America are my favorite Swallow, our largest swallow, returning each spring to my backyard, some use mud nesting in gourds, man made house's. Only Swallow dependent upon man for housing, in the fall they fly down to the Amazon basin South America. a great video.

jameslomenzo

So, for example how fast can these swallows fly when not carrying mud?

xkg

Feel like I'm watching a Documentary

bobgaryone

Your voice is so darn calm and peaceful and it feels like a verbal bath where to fall asleep

eetuthereindeer

Bro you're like a pro at this. I hope you get over 100k by the end of this year ❤️

Waspy

Love the video! I live in North America and we have a pair of swallows that nest on a piller in the area in front of our front door. They have been doing this for a few years, rebuilding their mud nest every spring. It was fun to learn about the evolution of a behavior I get to observe in my everyday life.

tuckerricklefs

I was observing a grackle female earlier today gathering materials to make her nest. I love nature !!!

Alcoholpad

The swallow nest made from saliva is very looked after with good economical benefit. One question, what is the airspeed of unladen swallow ( not carrying mud )?

dedykurniawansantoso

Amazing!! I found your channel when you only had 500 subs! You’ve grown so much already and well deserved!! Keep it up man

abstracter

This video could not have come out at a better time for me. A bridge I cross several times a week has been home to a colony of swallows every year, and they’re coming out again. I see them weaving in the air, flying up under the bridge where I cannot see—and now I know what they are doing! They feed on the tiny flying insects over the river

DefektiveEnvy