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Lewis and Clark
Illustrated Checklist
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Native and Naturalized (319)
Exotic: Escapee (6)
Hybrids (11)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Evana Newberry on 25 Oct 2020
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Evana Newberry on 25 Oct 2020
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Nyx Demure on 15 Sep 2023
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Bob Martinka on 7 May 2021
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Grant Hokit on 6 Apr 2024
- Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkiiLast observed by Andrew Guttenberg on 7 Nov 2020
- Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihiLast observed by Bob Martinka on 7 May 2021
- Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeliLast observed by Kyle Strode on 1 Sep 2023
- Townsend's x Black-throated Green Warbler (hybrid) Setophaga townsendi x virensLast observed by Stephen Turner on 14 May 2020
- Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyaneaLast observed by Ramona Kay on 14 Jun 2008
Additional Taxa (79)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by jess garby on 29 Mar 2024
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Montana Fish, Wildlife & Parks on 20 Mar 2024
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Stephen Turner on 22 Apr 2023
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Sharon Dewart-Hansen on 17 Nov 2023
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Stephen Turner on 15 Sep 2023
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Sharon Dewart-Hansen on 12 Sep 2023
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Kyle Strode on 22 Apr 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Zack Schlanger on 18 Sep 2023
- American Three-toed/Black-backed Woodpecker Picoides dorsalis/arcticusLast observed by Garrett MacDonald on 29 Jun 2006
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Konshau Duman on 29 May 2021
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Kyle Strode on 14 Jul 2023
- Black-capped/Mountain Chickadee Poecile atricapillus/gambeliLast observed by Hilary Turner on 19 Dec 2022
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Shane Sater on 24 Jul 2017