Use sources_non_forked folder for pathogen path, with sources_non_forked_fallback folder as fallback.

sources_non_forked/vim-snippets/UltiSnips/bib.snippets

@@ -1,52 +0,0 @@
-priority -50
-
-snippet online "Online resource" b
-@online{${1:name},
-	author={${2:author}},
-	title={${3:title}},
-	date={${4:date}},
-	url={${5:url}}
-}
-$0
-endsnippet
-
-snippet article "Article reference" b
-@article{${1:name},
-	author={${2:author}},
-	title={${3:title}},
-	journaltitle={${4:journal}},
-	volume={${5:NN}},
-	number={${6:NN}},
-	year={${7:YYYY}},
-	pages={${8:NN}--${9:NN}}
-}
-$0
-endsnippet
-
-snippet book "Book reference" b
-@book{${1:name},
-	author={${2:author}},
-	title={${3:title}},
-	subtitle={${4:subtitle}},
-	year={${5:YYYY}},
-	location={${6:somewhere}},
-	publisher={${7:publisher}},
-	pages={${8:NN}--${9:NN}}
-}
-$0
-endsnippet
-
-snippet inb "In Book reference" b
-@inbook{${1:name},
-	author={${2:author}},
-	title={${3:title}},
-	subtitle={${4:subtitle}},
-	booktitle={${5:book}},
-	editor={${6:editor}},
-	year={${7:YYYY}},
-	location={${8:somewhere}},
-	publisher={${9:publisher}},
-	pages={${10:NN}--${11:NN}}
-}
-$0
-endsnippet