Northern Cardinals decreased until 1979, then increased until 2005 and have been stable since the (blue on map = increase, red = decrease). The increases have been at the northern and western edges of their range, and since 2005, they've been decreasing in the south.
#NABBS #BiologicalMonitoring #Birds #PopulationTrends #NorthernCardinal #NOCA

Pine Warblers increased across their range from 1966 - 2000 (blue regions on maps). Since then they've been fluctuating but overall relatively stable. That survey-wide stability is a composite of decreases in the south (red coloured regions in south) and ongoing increases in the north (blue coloured regions).
#NABBS #BiologicalMonitoring #Birds #PopulationTrends #PineWarbler

Current global sperm #whale population size and estimates of post-whaling trajectory by Hal Whitehead and Megan Shin

#populationStatus #PopulationTrends #PopulationModel #HowMany #IUCN

https://www.nature.com/articles/s41598-022-24107-7