New study finds birds build hanging-nests to protect offspring from nest invaders RSocPublishing
They found that species building the most elaborate nests, particularly those with long entrance tunnels, produce offspring with longer developmental periods.
Nests with longer entrance tunnels are more effective at hindering access by nest invaders than shorter tunnels and thereby limits the exposure of developing offspring to nest invaders. Researchers suggest that the complex structural features in these nests do indeed play a role in protecting offspring from predators andThey find the consistency of these findings"striking" given that highly elaborate nests have evolved independently in the weaverbirds and icterids.Lead author of the study, Dr.
"It has been widely assumed that these nests prevent attacks by tree-climbing snakes but this idea is largely based on anecdotes until now.
Their study findings reveal how animal architects such as nest-building birds and burrowing mammals can create protective environments that change how their offspring develop.
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