* Big-leaf Maple: Acer macrophyllum- Most trees now in bloom.
* Bicolored Cluster Lily: Triteleia grandiflora var. howellii - Several in bloom.
* Common Camas: Camassia quamash- Beginning to bloom below the Old Highway.
* Pale-anthered Glacier Lily: Erythronium grandiflorum var. pallidum - A few in bloom.
* Chocolate Lily: Fritillaria affinis - A few in bloom.
* Yellow Bells: Fritillaria pudica- A few still in bloom, especially higher up the hillsides.
* Meadow Death-camas: Toxicoscordion venenosum var. venenosum- Common.
* Grass Widows: Olsynium douglasii var. douglasii -A few still in bloom.
* Common Bastard Toad-flax: Comandra umbellata var. californica- A few in bloom.
* Miner's Lettuce: Claytonia perfoliata- Common.
Bitter Root: Lewisia rediviva- A few with flower buds visible.
* Line-leaf Montia: Montia linearis- Common.
* Chickweed: Stellaria media- Numerous
* Upland Larkspur: Delphinium nuttallianum- A few trying to bloom along the creek.
* Western Buttercup: Ranunculus occidentalis var. occidentalis - A few in bloom.
* Shining Oregon Grape: Berberis aquifolium- Fairly numerous.
* Little Western Bittercress: Cardamine oligosperma- Fairly common.
* Oaks Toothwort: Cardamine nuttallii - Beginning to bloom.
* Spring Whitlow-grass: Draba verna- A few in bloom.
* Rough Wallflower: Erysimum capitatum - A few in bloom along the western approaches to Catherine Creek.
* Dutchman's Breeches: Dicentra cucullaria- One in bloom.
* Bulblet Prairie Star: Lithophragma glabrum (formerly L. bulbifera) - A few in bloom.
* Small-flowered Prairie Star: Lithophragma parviflorum - A few in bloom.
* Brittle-leaved Saxifrage: Micranthes fragosa - Fading out of bloom.
* Northwestern Saxifrage: Micranthes integrifolia - Fading out of bloom.
* Rusty-hair Saxifrage: Micranthes rufidula - Still fairly numerous.
* Serviceberry: Amelanchier alnifolia- A few in bloom.
* Bicolored Lupine: Lupinus bicolor- Dense bloom towards Major Creek along the Old Highway.
* Columbia Gorge Lupine: Lupinus latifolius var. latifolius (formerly var. thompsonianus) - A few in bloom at low elevation along the Old Highway at the west and east ends of the Catherine Creek plateau.
* Small-flowered Lupine: Lupinus micranthus- Numerous.
Bighead Clover: Trifolium macrocephalum - A few nearly in bloom.
Sand Clover: Trifolium wildenovii - A few nearing bloom.
* Filaree: Erodium cicutarium- A few in bloom.
* Cut-leaf Violet: Viola sheltonii- Fairly common.
* Chervil: Anthriscus scandicina- A few in bloom.
* Columbia Desert Parsley: Lomatium columbianum -A few plants in bloom .
* Klickitat Desert Parsley: Lomatium klickitatense
* Biscuitroot: Lomatium macrocarpum (yellow flowered form)- Fairly common.
* Bare-stem Desert Parsley: Lomatium nudicaule - Fairly common.
* Butterfly-loving (Pungent) Desert Parsley: Lomatium papilioniferum - Very common.
* Nine-leaf Desert Parsley: Lomatium triternatum var. triternatum - A few in bloom.
* Sierra Snake Root: Sanicula graveolens- A few in bloom.
* Desert Shooting Star: Dodecatheon conjugens- A few in bloom
* Poet's Shooting Star: Dodecatheon poeticum- Common.
* Midget Phlox: Microsteris gracilis- Common.
* Ball-head Waterleaf: Hydrophyllum capitatum var. thompsonii- A few almost in bloom.
* Woods Nemophila: Nemophila parviflora- A few in bloom.
* Silver-leaf Phacelia: Phacelia hastata var. hastata - A few coming into bloom.
* Rigid Fiddleneck: Amsinckia retrorsa- A few in bloom.
* Weak-stem Cryptantha: Cryptantha flaccida ? - Numerous
* Great Hound's Tongue: Adelinia grandis - Several in bloom.
* Rusty Popcorn Flower: Plagiobothrys nothofulvus- Numerous bloom above the power lines, towards the slopes above Major Creek.
* Slender Popcorn Flower: Plagiobothrys tenellus- Numerous.
* Henbit: Lamium amplexicaule- A few in bloom.
* Red Dead-nettle: Lamium purpureum- A few in bloom.
* Large-flowered Blue-eyed Mary: Collinsia grandiflora- Common.
* Small-flowered Blue-eyed Mary: Collinsia parviflora- Common
* Few-flowered Blue-eyed Mary: Collinsia sparsiflora var. bruceae - Fairly common.
* Chickweed Monkey Flower: Erythranthe alsinoides- Numerous in seeps.
* Common Monkey Flower: Erythranthe guttata- A few in bloom.
* Small-flowered Tonella: Tonella tenella- Fairly common under the oaks.
* Naked Broomrape: Aphyllon purpureum - Very numerous.
* Bedstraw/ Cleavers: Galium aparine- Numerous, but only in bloom near the Old Highway.
* Long-spurred Plectritis: Plectritis ciliosa- A few in bloom.
* Rosy Plectritis: Plectritis congesta- Numerous.
* Bigroot: Marah oreganus- A few in bloom.
* Annual Agoseris: Agoseris heterophylla- Fairly numerous.
* Northwest Balsamroot: Balsamorhiza careyana x deltoidea- A few in bloom near the arch.
* Gold Stars: Crocidium multicaule -A few still in bloom.
* False Agoseris: Nothocalais troximoides- A few in bloom.
Western Groundsel: Senecio integerrimus var. ochroleucus - A few nearing bloom.
* Common Dandylion: Taraxacum officinale- Fairly common in disturbed areas.
1. Western Meadowlark (1)
2. Stellers Jay (Numerous)
3. Scrub Jay (Numerous)
5. Turkey Vulture (2)
5. Dark-eyed Junco- (3)
6. Northern Flicker- (1)
7. Osprey-(1)
8. Yellow-rumped Warbler (Very Numerous)
9. American Robins (2)
10 Starlings (Numerous)
11. Red-breasted Nuthatch (1)
12. White-breasted Nuthatch (1)
13. Violet-green Swallow (4)
14. California Ground Squirrel (2)
15. Western Fence Lizard (Several)
16. Bumble Bees
17. Hoover Flies (pollinating Midget Phlox)
18. White butterfly with orange wing-tips.
19. Small dark butterfly.