It takes thousands of caterpillars to raise a nest of baby birds to fledglings. (This is true even for seed-eating birds.) Those caterpillars don't come from thin air.
It takes thousands of caterpillars to raise a nest of baby birds to fledglings. (This is true even for seed-eating birds.) Those caterpillars don't come from thin air.
Unlike dogs, there isn’t a direct human impact to negative behaviors of cats or humans poor management of them. Nobody really cares about birds, and “herding cats” carries the meaning that it does for a reason.
First we would need to study the real impact of cats on bird populations, specially out of islands.
Is a fact that cats roam the old world near people since thousands of years. Is also an easily verifiable fact that there are species of wild cats ranging from tiny to huge and living basically everywhere from deserts to the taiga. If we assume the dogmatic claims that are repeated all the time, not a single bird should be alive... but this is not what we observe.
Most European passerines somehow didn't went extinct and those that don't migrate and are more exposed to cats for more time, those... are more numerous than ever.
But the migrant birds are vanishing. How do we explain that?, maybe there is more than the cats?
"Introduced cats have had profound impacts on native faunas in many places, contributing to 26% of the total extinctions of mammals, birds and reptiles globally since 1600 (Doherty et al. 2016). The impacts of cats on native faunas have been greatest on islands, including large island nations such as Australia and New Zealand whose fauna evolved without exposure to felids"