In Java, should I use getters or interface tagging for constant properties?

Suppose I am modelling different animals in Java. Every animal has some combination of these abilities: walk, swim and fly. For the example, the ability set is constant.

I can store this information as getters that return constants. For example:

public class Penguin implements Animal {

    public boolean canWalk() {
        return true;
    }

    public boolean canSwim() {
        return true;
    }

    public boolean canFly() {
        return false;
    }

    // implementation... 
}

The run-time check is then:

if (animal.canFly()) {

    // Fly! 
}

Or I can use "tagging" interfaces:

public class Penguin implements Animal, Flyer, Swimmer {

    // implementation... 
}

The run-time check is then:

if (animal instanceof Flyer) {

    // Fly! 
}

What are the advantages and disadvantages of each approach?