Towheeblog

So the robin tagged in Canada continues to be at Ankeny NWR. For the first time this month it was sensed around 6PM PT, on Feb 4. Then multiple times Feb 6 between 1030AM and 630PM Pacific Time. Last month the robin “vanished” after Jan. 18. If the robin is moving around the area it could become “invisible” to the Motus sensor if it’s below a ridge to the east of the Nature Center and thus cut off from the tower’s line of sight.

Here is time chart, measured in GMT (now called UTC).