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But organisms are adapted to summer and winter cycles, they don't suddenly appear, they have been the same for ages. But change the timing a little, and you ha
by Scarblac 3y ago
But organisms are adapted to summer and winter cycles, they don't suddenly appear, they have been the same for ages.
But change the timing a little, and you have eggs hatching weeks before the caterpillars that the chicks eat appear, and lots of them die. They co-evolved for a fixed time at which spring appeared, now that timing is off and evolution isn't quick enough to move along with climate change.
- ethagknight 3y agoThey have NOT been the same for ages. They have varied wildly with mild and harsh summers and winters. Lots of confidence in thinly observed theories. Caterpillars and chicks having a rough Spring is part of nature.
- Timon3 3y agoBut there have been mild and harsh summers and winters for ages. They don't have to be the same every year for animals to adapt. But if winters suddenly were twice as long and twice as cold, you can bet that the prior adaptions don't suffice anymore. That is what we're talking about.