Atlas of Habitats

group

0.0004 m³

at 2.3 m

6.5ºN

[affixed] nest

mixed

soft

birds

[affixed] nest

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Introduction

Liberia
Booker Washington Institute, Kakata
6.5289" N, 10.3638 W
22/08/2024 4:15pm

Barn swallows are often associated with human environments, where they build their nests in sheltered locations. They prefer eaves, rafters, barns and bridges, utilizing mud and grasses to create their cup-shaped nests. Additionally, barn swallows are often found near bodies of water such as rivers, lakes and ponds. These areas provide abundant insect populations, making it easier for the swallows to feed.

Microclimate

The combination of mud, plant material, and feathers helps regulate the temperature within the nests, protecting eggs and chicks from variable weather conditions. The use of mud and saliva ensures that the nests are robust and can withstand environmental challenges. The natural colors of the materials help the nests blend into their surroundings, providing protection from predators. Soft linings created by feathers and plant material enhance the comfort of the nests, promoting the healthy development of the young.

Material

The primary building material for barn-swallow nests is mud, which they collect from wet soil, puddles, and riverbanks. The use of mud provides several benefits, including insulation, structural integrity, and moisture resistance. In addition to mud, barn swallows incorporate various plant materials into their nests. These may include dried grasses, feathers, and bits of leaves or other organic debris. These materials add bulk and texture to the nest, helping to create a comfortable environment for eggs and hatchlings.

Location

We found this nest in an abandoned guesthouse located on the campus of the Booker Washington Institute (BWI). BWI, situated in Kakata, is the largest vocational training school in Liberia. The city of Kakarta is characterized by a tropical rainforest climate, marked by warm temperatures, high humidity, and significant rainfall throughout the year. The humidity levels in Kakata are often high, frequently exceeding 80%. This humidity fosters the growth of dense vegetation, which serves as a habitat and and offers ample food sources for numerous species.

Construction

The swallows gather small clumps of mud in their beaks and carry them to their nesting sites. Once there, they shape the mud into solid nests, layering and smoothing it to create a sturdy foundation. Swallows produce a sticky saliva that acts as a natural adhesive, helping to hold the mud and plant materials in place. The saliva contributes to the strength and durability of the nests, enabling them to withstand rain and wind. After the main structure is complete, swallows line the inside of the nests with feathers and softer plant materials.