Birds:
Birdcast https://birdcast.info/migration-tools/
Trektellen https://www.trektellen.org/
Handbook of Avian Hybrids of the World https://www.spinus.info/Images/books/AH743697479746.pdf
Piranga https://www.natureinstruct.org/piranga
Feather Atlas https://www.fws.gov/lab/featheratlas/
Molt http://tenmillionearthlings.blogspot.com/2016/07/understanding-molt-banders-perspective.html
Waterfowl Quiz https://www.fws.gov/waterfowlsurveys/welcome.jsp?menu=home

MD Specific:
MD Biodiversity Project https://www.marylandbiodiversity.com/
Frog and Toad Calling Charts https://mygreenmontgomery.org/wp-content/uploads/2021/03/Montgomery-FrogWatch-Reference-Charts-for-Frog-and-Toad-calls.pdf

Other:
Springtails http://www.collembola.org
Galls https://gallformers.org
Aphid Host List & Keys http://www.aphidsonworldsplants.info/C_HOSTS_AAIntro.htm
Hover Flies (Syrphidae) Photo Index https://www.zoology.ubc.ca/~biodiv/entomology/main/Diptera/Syrphidae/id-index-d.php
Easily Missed Species in Your Area https://simonrolph.github.io/easily_missed/#species_lists
Nature Serve https://www.natureserve.org/

iNat:
Identifier Stats https://jumear.github.io/stirfry/iNat_identifier_stats.html
iNat Wild Achievements https://wild-achievements.mywild.co.za/

Games:
BIRDL https://brdl.glitch.me/?fbclid=IwAR3KPT3_4ZJfor609ggCq-St_YwD2AE1NDMMQIIYWzyGfrs_wmyq6hY9FYU
Birdie Game https://birdiegame.net/

Taxones favoritos

Ve todo