removed dead links
add video links
update date
added Journal of Avian Biology
Added Journal of Avian Biology
table-cell, colspan test
use table-caption and split into multiple tables
Merge pull request #644 from daisieh/june-video-update

June video update
Merge pull request #659 from jamie-dryad/patch-10

Added Journal of Avian Biology
Merge pull request #658 from jamie-dryad/patch-9

added Journal of Avian Biology