Cornell eBird is just releasing species maps showing trends in abundance from 2007 to 2021. Wonderful consolidation of zillions of observations.
I pulled up the map for Blue-gray Gnatcatcher. https://science.ebird.org/en/status-and-trends/species/buggna/trends-map?utm_source=Cornell%20Lab%20eNews&utm_campaign=612a9e57e2-Cornell-Lab-eNews-November-2022&utm_medium=email&utm_term=0_47588b5758-612a9e57e2-306045397 This map tracks my experience of a significant decline in abundance along the Front Range. It would appear that we are on the western edge of a broad decline in abundance in the eastern US, whereas almost the entire West is showing increases. If nothing else, these maps will fuel a lot of discussion and arm-chair theorizing. -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/cobirds?hl=en?hl=en * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/6498338e-bc36-4ebe-b9a5-9b2df292ac29n%40googlegroups.com.
