Under construction. To watch this male Vitelline Masked Weaver building nests was very fascinating. It used different lengths and widths of grass during different stages of the construction. One type for the anchoring knots, one for the structural stuff, on for the rain cover and finally one for interior decoration. He built several nests and also displayed vigorously for females inspecting his work, investing a huge amount of energy and time into it all.
American households would pay on average $39 per year, or a one-time sum of $297 to conserve bald eagles. Going off that, they’re one of the most economically valuable species in the US.
This comes from a study by
Leslie Richardson and John Loomis published in 2009 conducting a meta analysis of 67 wildlife valuation studies ($2006)... maybe a bit outdated by now.