Animals that reproduce on sunny days?

It's not quite accurate to say animals reproduce *only* on sunny days. Many animals, especially those that live in areas with distinct seasons, have specific breeding times that are more influenced by factors like temperature, food availability, and day length rather than just sunshine.

However, some animals do have certain behaviors or processes that are more likely to occur on sunny days, which indirectly relate to reproduction. Here are a few examples:

* Insects: Many insects, like butterflies and moths, are more active and likely to mate on warm, sunny days. This is due to the fact that their flight muscles work better at higher temperatures.

* Reptiles: Some reptiles, like lizards, use basking in the sun to regulate their body temperature. This can influence their mating behavior, as they need to be warm enough for successful reproduction.

* Birds: While birds don't necessarily reproduce *only* on sunny days, they might be more likely to engage in courtship displays and build nests on days with good weather.

It's important to remember that these are just general observations and there are exceptions to every rule. Animal behavior is complex and influenced by various factors.

Let me know if you have other questions!