Investigation Israel Species 
10,000 Birds
MAY 28, 2016
In the northern hemisphere, the combination of migrants, resident species, and higher frequency of bird song makes it much easier to identify more birds, compared to say, August, so if you want to get really crazy and go for a Big Day record, spring is the time to go for it. They got all three potoo species in Costa Rica.
10,000 Birds
DECEMBER 26, 2022
This is a rather photographer-friendly species, staying on the same branch for quite a while and even returning to it after catching some insects – you can see this on video here and here. While the source does not say so directly, it hints that this means the species is not as intelligent as Eurasian Magpies (which pass the test).
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