- Arachtober
- Birding Photography: Gear and Places
- Birds Of Pennsylvania
- Birdshare
- Bolas Spiders (Mastophora Species)
- Caterpillars
- Caterpillars with eyespots
- Collembola/Springtails from around the world
- Costa Rica Images
- Eastern USA Butterflies
- eBird Rarity Photos
- Excellence In Avian Photography (EIAP) -- INVITED IMAGES ONLY !!
- Fantastic Insect (Invite only)...Please comment.
- Flickr Wild Meadows & Grasslands
- Howard County Conservancy (HCC) BioBlitz
- in explore
- Katydids and bush-crickets of the world - Tettigoniidae
- Maryland Biodiversity Project
- Maryland Birders
- Maryland Caterpillar Safari Group
- Maryland State Parks
- Maryland Wildlife
- MBP Afield
- MBP Fungi
- MBP to Review
- MD/DCRC
- Moths of the eastern United States
- Mushrooms & other fungi (Your Fab Fungi Fotos, FFF)
- National Moth Week
- Native Plants of Maryland and the Delmarva Peninsula
- Nature & Wildlife of Pennsylvania
- Neotropical Birds
- North American Odonata
- Patapsco Valley State Park
- Pickering Creek BioBlitz 2015
- Project Weather
- SERC BugBlitz
- Sparrows of North America
- U.S. National Park Service
- Wildflowers of Eastern North America
- Wildlife and Nature of DelMarVa