So a total of 1.1° C (2° F) since 1880. Could it be something else? Food supply and deforestation? The temperature shift does not seem to be significant enough. I am assuming when Prospect Park gets a foot of snow, they will head South?
[1] https://www.climate.gov/news-features/understanding-climate/...
[0] https://www.ncei.noaa.gov/access/monitoring/climate-at-a-gla...
However, for things like animal migration - and generally the more immediate threats of climate change, such as increasingly destructive weather events, ecosystems dying out, crops failing, wet bulb temperature hitting levels that make some countries uninhabitable in the summer - tracking the high and low points matters much more. E.g. the average may even go down, but if this is because cold point drops and high point goes up, ever for a small part of the year, we can kiss farming in the region goodbye.
So, sun spots send out some particles. In addition there are cosmic rays from far outside our solar system. When cosmic rays hit the upper atmosphere, they cause the water vapor to form little water droplets which form clouds which have a net cooling effect. Sun spots, though, interfere with the cosmic rays and, thus, have a net warming effect. So, for the next ~3 years we will be getting some net warming from the increased rate of sun spots from the peak of the sun spot cycle.