Aves appears in:

EOD - eBird Observation Dataset

Artdata

Tiira information service

Norwegian Species Observation Service

Birds Australia, Birdata

Great Backyard Bird Count

Southern African Bird Atlas Project

Bird Ringing Centre in Sweden (NRM)

naturgucker

OEH Atlas of NSW Wildlife

DOF

First Bird Atlas

Eremaea

SAFRING

Garden Bird Surveys

DOF 2001-2006

Point Reyes Bird Observatory - Point Counts

Finnish Winter Bird Census

SEAMAP - marine mammals, birds and turtles

AMNH Bird Collection

Inventaire National du Patrimoine Naturel : Oiseaux hivernants de France

Fauna Atlas N.T.

Hawk Migration Association of North America - HawkCount