Some types are. Yews, for example, are very toxic. Even a small bite can be fatal. Other types have toxic effects, too, but what happens depends on the size of the bird and how much is eaten. Many pines can produce digestive upset in small amounts. The amount that might make a Cockatiel sick could kill a finch or canary. If you know the specific species of conifer, I can give you more detailed information. The following site has more information on toxic plants:
Birds are not poisonous.
Poisonous birds do not exist according to science so you can not find them anywhere in the world.
Voles are not "poisonous," and are eaten by birds of prey worldwide.
No , ducks fat is not poisonous .
they are poisonous. As beautiful as they are. It is in fact true that Monarch's are extremely poisonous.
NO. Just like cats, dogs, and horses, chocolate is poisonous to birds.
Birds will eat non poisonous centipedes.
So birds and other predators don't eat them! The aren't poisonous, though.
Because of corned bop
Viceroy butterflies are not poisonous, but they look just like poisonous monarch butterflies. Which behavior does the viceroy use to deter birds that would otherwise eat it
Viceroy butterflies use mimicry as a defense mechanism to deter birds from eating them. By resembling the toxic monarch butterflies, which are unpalatable to predators, viceroys exploit the learned aversion that birds have toward their poisonous counterparts. This resemblance helps the viceroy avoid predation, as birds may mistake them for monarchs and choose not to eat them.
There are no poissiness birds! But most other animal groups have poiseness animals in. You can get dangerous birds which are agressive but no toxic or posiness ones.