Birding Shanghai in January 2023
10,000 Birds
FEBRUARY 2, 2023
Some of the lazier Common Moorhens apparently try to pass the arduous work of raising their chicks on to other species -a paper describes how Little Bitterns are utilized as surrogate parents. In Shanghai, one way to find out was to measure the concentration of these chemicals in Eurasian Tree Sparrows from different locations.
147 
Let's personalize your content