No. Echidnas do not attack anything. They use their sharp-clawed feet to dig into termite and ant nests in order to reach the insects, but they certainly do not attack birds.
Zeus
Birds, most fish and insects, and the platypus and echidna.
Birds are not mammals. They are in their own category, which is "Birds". The only two egg-laying mammals are the platypus and the echidna, which are classified as monotremes.
yes, mostly birds have the ability to attack when disturbed or if it is being abused.
Bees will sting birds when their beehive is under attack. However, birds tend to be quicker at consuming the insects before the bee can attack.
Cause smaller birds are scared of larger birds eatind their young so the chase and attack it for it to fly away.
They are called Birds of Prey.
Most reptiles, amphibians, birds, most arthropods, the platypus, and the echidna.
Bodega Bay
The only other egg-laying mammal is the echidna which, like the platypus, is classified as a monotreme. There are two species of echidnas: the short-beaked echidna (Tachyglossus aculeatus) of Australia, and the long-beaked echidna (Zaglosssus bruijni) of New Guinea. There are several sub-species of the long-beaked echidna: the Western long-beaked echidna, Sir David's long-beaked echidna and the Eastern long-beaked echidna.
Reptiles and birds have amniotic eggs, as well as the occasional mammal like the platypus and echidna.
There is no such thing as a bird that is a mammal. Mammals are one classification, and birds are another. All birds lay eggs. Most mammals do not lay eggs. The only exceptions are the monotremes, which include just the platypus and the echidna.