3 ms·
it means cats and other factors are outpacing replacement, for a total of 3 billion lost… that’s a lot. Total population was somewhere in the area of 10 billion
by micromacrofoot 5y ago
it means cats and other factors are outpacing replacement, for a total of 3 billion lost… that’s a lot. Total population was somewhere in the area of 10 billion in north america, now around 7 billion
- rubylark 5y agoSo I guess my next question is: what is the replacement rate? Because 2.6B dead a year from a single source when there is only about 10B alive at any one time, AND that 26% annual death not being the highest cause of bird mortality (e.g. >>26% of all birds die a year), then that means there are a lot of bird babies and a lot of bird corpses out there. The stats are a bit mind boggling for me.
- marcosdumay 5y agoMost birds get into reproductive age between 1 and 3 years, and for most species a couple usually has 1 or 2 viable offspring per year. Some birds grow slower than that, but cats are usually not a problem for them.