Are robins fierce For instance are they aggressive when it comes to cats near their nesting site?

Robins, while small, are known for their fierce defense of their nests and young. They are not aggressive towards cats in the sense of attacking them, but they will become very vocal and bold when they sense a threat, including cats.

Here's what they might do:

* Dive bombing: They will swoop down repeatedly, flying close to the perceived threat, making a loud, distinctive "chirp" or "chitter" sound.

* Distraction displays: They might feign injury to lure a predator away from the nest.

* Vocalization: They will sing loudly and persistently, alerting other birds and potentially scaring the predator away.

While they are likely to scare off a cat, it's important to note that:

* Cats are predators and may still attack a nest even if the robin is trying to deter them.

* Young robins are vulnerable and can be easy prey for cats.

If you see a cat near a robin's nest, the best thing to do is to try and scare it away, or if possible, keep the cat away from the area entirely.