![Mineralogical and textural characteristics of nest building geomaterials used by three sympatric mud-nesting hirundine species | Scientific Reports Mineralogical and textural characteristics of nest building geomaterials used by three sympatric mud-nesting hirundine species | Scientific Reports](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-018-29307-8/MediaObjects/41598_2018_29307_Fig1_HTML.png)
Mineralogical and textural characteristics of nest building geomaterials used by three sympatric mud-nesting hirundine species | Scientific Reports
![I took this photo of a cute little Red Rumped Swallow while it collected some mud to build its nest! Their nests are usually somewhere around, a cup of mud attached to I took this photo of a cute little Red Rumped Swallow while it collected some mud to build its nest! Their nests are usually somewhere around, a cup of mud attached to](https://preview.redd.it/5p99c6iod1671.jpg?auto=webp&s=834fae6ed262fdd7198b457777196d3ec033a4f2)
I took this photo of a cute little Red Rumped Swallow while it collected some mud to build its nest! Their nests are usually somewhere around, a cup of mud attached to
![Minden Pictures - Red-rumped Swallow (Cecropis daurica) flying towards nest, Seville, Spain - Ramon Navarro/ NiS Minden Pictures - Red-rumped Swallow (Cecropis daurica) flying towards nest, Seville, Spain - Ramon Navarro/ NiS](https://www.mindenpictures.com/cache/pcache2/70044243.jpg)
Minden Pictures - Red-rumped Swallow (Cecropis daurica) flying towards nest, Seville, Spain - Ramon Navarro/ NiS
![File:Red-rumped Swallow (Hirundo daurica) collecting mud for nest W IMG 7985.jpg - Wikimedia Commons File:Red-rumped Swallow (Hirundo daurica) collecting mud for nest W IMG 7985.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/0/05/Red-rumped_Swallow_%28Hirundo_daurica%29_collecting_mud_for_nest_W_IMG_7985.jpg)