A fact from Wildlife of Liberia appeared on Wikipedia's Main Page in the Did you know column on 14 June 2019 (check views). The text of the entry was as follows:
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I've never figured out what species it is, but the pepperbird has long been a national symbol. See [1] for some sample items, including [2] and [3]. Nyttend (talk) 03:02, 14 June 2019 (UTC)[reply]
Hi, thank you; since you got that for me, I was able to find a reliable source linking the pepperbird with this bulbul. Pycnonotus barbatus, the common bulbul, is the pepperbird.[1] But where can I find a reliable source saying that this is the country's national bird? All I'm seeing are websites put up by no-name people. Note left at WP:RDH. Nyttend (talk) 23:01, 14 June 2019 (UTC)[reply]
There are some bulbul stamps on here including a 2018 miniature sheet naming the Garden Bulbul as "The National Bird of Liberia". I'd assume they were issued by their official PO. I can't find any mention on their govt sites of their national symbols nor for their PO, so still no RS. JennyOz (talk) 01:17, 16 June 2019 (UTC)[reply]
References
^Travel sketches from Liberia : Johann Büttikofer's 19th century rainforest explorations in West Africa. Henk Dop and Phillip T. Robinson, eds. Leiden and Boston: Brill, 2013, 80.