Toxic Plants For Birds

Acokanthera -- Acokanthera spp. (all parts toxic, except ripe fruit)
Amaryllis -- Amaryllis spp.
Angel's Trumpet -- Datura spp., (leaves, seeds, flowers)
Apricot -- Prunus armeniaca (pits, leaves and bark)
Apple -- malus spp., (seeds, leaves, bark)
Avacado -- Persea americana (pit, leaves, unripe fruit, and stems)
Azalea -- Rhododendron canadensis

Balsam Pear, Bitter Melon -- Momordica charantia
Baneberry -- Actaea rubra, A. pachypoda
Belladonna -- Atropa belladonna
Bird of Paradise -- Poinciana and related spp. (seed pods and flowers)
Bittersweet -- Celastrus spp.
Black Locust -- Robinia pseudoacacia
Boxwood -- Buxus spp.
Bracken Fern -- Pteridium aquilinum
Buckthorn -- Karwinskia humboldtiana and related spp.
Burdock -- Arctium spp.
Buttercup -- Ranunculus spp.

Caladium -- Caladium spp.
Calla Lily -- Zantedeschia aethiopica
Catclaw Acacia -- Acacia greggii (twigs and leaves)
Caster Bean -- Ricinus communis
Cherry -- Prunus spp., (pits, leaves, and bark)
Chinaberry -- Melia azadarach
Clematis -- Clematis montana and related species
Coral Plant -- Jatropha mutifida
Crocus (autumn) -- Cholchicum autumnale
Cycad or Sago Cycas -- Cycas revoluta

Daffodil -- Narcissus tazetta
Daphne -- Daphne mezerum
Death Camas -- Zigadenus venenosus and other related species
Delphinium -- Delphinium spp.
Devil's Ivy -- Epipremnum aureum
Dieffenbachia (dumb cane) -- Dieffenbachia spp.

Eggplant -- Solanum melongena, (unripe/overipe fruit, leaves)
Elderberry -- Sambucus mexicana (roots, leaves, stems, bark)
Elephant's Ears or Taro -- colocasia spp.
Euonymus -- Euonymus spp. (filit, bark, leaves)
European Pennyroyal -- Mentha pulegium

Figs -- Ficus spp. (sap)
Four o'clock -- Mirabilis jalapa
Foxglove -- Digitalis purpurea

Heliotrope -- Heliotropium spp., (leaves)
Henbane -- Hyoscyamus niger
Holly -- Ilex aquifolium and related spp. (leaves, berries)
Horse Chestnut -- Aesculus hippocastanum and related spp.
Horse Nettle -- Solanum carolinense
Hyacinth -- Hyacinthus orientalis
Hydrangea -- Hydrangea spp.

Iris -- Iris spp.
Ivy (Boston, English, and some others) -- Hedera spp.

Jack-in-the-Pulpit -- Arisaema spp.
Jerusalem Cherry -- Solanum pseudocapsicum and related spp.
Jessamine, Yellow -- Gelsemium sempervirens (leaves, seeds, and 
flowers)
Jonquil -- Narcissus jonquilla
Juniper -- Juniperus spp.

Lantana -- Lantana camara
Larkspur -- Delphinium spp.
Laurel -- Kalmia spp.
Lily-of-the-Valley -- Convalleria maijalis
Lobelia -- Lobelia
Locoweed -- Astragalus spp. and Oxytropis spp.
Lupine -- Lupinus spp.

Marijuana -- Cannabis sativa
Milkweed -- Asclepias spp.
Mistletoe -- Phoradendron villosum
Mock Orange -- Philadelphus spp.
Moonseed -- Mensipermum canadense
Monkshood -- Aconitum spp.
Morning Glory -- Ipomea violacea (seeds)
Mushrooms -- Amanita spp. and many others

Narcissus -- Narcissus spp.

Oak -- Quercus spp.
Oleander -- Nerium oleander

Peach -- Prunus persica (leaves, pit, bark)
Pear -- Pyrus spp. (leaves, seeds, bark)
Peony -- Paeonia officinalis
Periwinkle -- Vinca minor, Vinca rosea
Peyote -- Lophophora williamsii
Philodendron -- Philodendron spp. and Monstera spp.
Pigweed -- Amaranthus spp.
Plum -- Prunus spp. (leaves, pit, bark)
Poison Hemlock -- Conium maculatum
Poison Ivy -- Toxicodendron radicans includes T. rydpergii
Poison Oak -- Toxicodendron quercifolium and T. diversilobum
Poison Sumac -- Rhux vernix
Poinsettia -- Euphorbia pulcherrima
Poppy -- Papaver somniferum and related spp.
Pokeweed -- Phytolacca americana
Potato -- Solanum tuberosum (sprouts, leaves, berries, green tubers)
Pothos -- eprimemnun aureum
Primrose -- Primula spp.
Privet -- Ligustrum vulgare

Ragwort -- Senecio jacobea and related spp.
Red Maple -- Acer rubrum
Rhododendron -- Rhododendron spp.
Rhubarb -- Rheum rhabarbarum (leaves)
Rosary Pea -- Abrus precatorius

Sage -- Salvia officinalis
Shamrock Plant -- Medicago lupulina, Trifolium repens, Oxalis 
acetosella
Skunk Cabbage -- Symplocarpus foetidus
Snowdrop -- Galanthus nivalis
Sorrel -- Rumex spp., Oxalis spp.
Spurges -- Euphorbia spp.
Star of Bethlehem -- Ornithogalum umbellatum
Sweet Pea -- Lathyrus odoratus

Tobacco -- Nicotiania spp.
Tomato -- Lycopersicon esculentum (stems and leaves)
Tulip -- Tulipa spp.

Virginia Creeper -- Panthenocissus quinquefolia
Vetches -- Vicia spp.

Water Hemlock -- Cicuta spp.
Waxberry -- Symphoricarposalbus
Wisteria -- Wisteria spp.

Yew -- Taxus spp.