diff --git a/mobs_bat/license.txt b/mobs_bat/license.txt
index 8b68e7d..b425965 100644
--- a/mobs_bat/license.txt
+++ b/mobs_bat/license.txt
@@ -1,12 +1,62 @@
---------------------------
---------------------------
--- ANÝMAL BAT --
---------------------------
---------------------------
---
--- Model and textures from Defense Subgame
--- License of defense mod GPL
--- License of media (models, textures ) (CC BY-SA 3.0)
--- License of Api WTFPL Simple Mobs by PilzAdam > Mob Redo by Ten1plus > Redo+ Mahmutelmas06
--- Sounds from bigsoundbank and WTFPL ( confirmed by email )
---
\ No newline at end of file
+# mobs_bat
+(from blert2112's mobs_sky modpack)
+
+## Authors and Licensing
+
+* Media
+ * animal_bat.ogg: CC0 see mobs_bat/sounds/CC0-legalcode.txt (based on
+ "Umbrella Flapping - Senn K6 SD 788T.WAV" by lunchmoney from
+ --this
+ replaces the original one that sounded like paper -poikilos)
+ * Model and textures are from Defense Subgame:
+ "Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+ http://creativecommons.org/licenses/by-sa/3.0/"
+ - Lean Rada
+
+* Code: MIT License (below).
+> The original mod license implies that the code is derived from the
+> simple mobs, mobs redo, and Redo+ APIs, and that the mod is WTFPL.
+> According to that license, I can do what I want, therefore I'm
+> rereleasing the mod code under the MIT License to avoid
+> [legal problems](https://news.ycombinator.com/item?id=8104407).
+-poikilos
+> Copyright 2015 mahmutelmas06, blert2112
+>
+> Permission is hereby granted, free of charge, to any person obtaining
+> a copy of this software and associated documentation files (the
+> "Software"), to deal in the Software without restriction, including
+> without limitation the rights to use, copy, modify, merge, publish,
+> distribute, sublicense, and/or sell copies of the Software, and to
+> permit persons to whom the Software is furnished to do so, subject to
+> the following conditions:
+>
+> The above copyright notice and this permission notice shall be
+> included in all copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+> EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+> MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+> IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+> CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+> TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+> SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Further evidence of author's indent: by including a license file in each
+mod that doesn't mention any boundaries (other than CC licenses which
+have been retained here) in a public repository, the original author(s)
+indicate(s) that the code and media are publicly licensed, as opposed to
+not being licensed and opposed to having a limited license.
+
+## Special Thanks:
+* License of defense mod: GPL
+ (code in this directory of the repo is not derived from the defense
+ mod whatsoever; the mod was written by mahmutelmas06 and posted to the
+ official forum thread)
+* License of Api WTFPL Simple Mobs by PilzAdam > Mob Redo by TenPlus1 >
+ Redo+ Mahmutelmas06 (use of the API is considered common knowledge so
+ code in this repo is not a "derivative work")
+* duane-r is not listed as an author, since in his words, "The model has
+ not been modified. Only the texture file names in it have been
+ disabled. This will stop the log spam for those of us who run
+ servers."
+
diff --git a/mobs_bat/sounds/CC0-legalcode.txt b/mobs_bat/sounds/CC0-legalcode.txt
new file mode 100644
index 0000000..0e259d4
--- /dev/null
+++ b/mobs_bat/sounds/CC0-legalcode.txt
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
+
+ CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
+ LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
+ ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
+ INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
+ REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
+ PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
+ THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
+ HEREUNDER.
+
+Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator
+and subsequent owner(s) (each and all, an "owner") of an original work of
+authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for
+the purpose of contributing to a commons of creative, cultural and
+scientific works ("Commons") that the public can reliably and without fear
+of later claims of infringement build upon, modify, incorporate in other
+works, reuse and redistribute as freely as possible in any form whatsoever
+and for any purposes, including without limitation commercial purposes.
+These owners may contribute to the Commons to promote the ideal of a free
+culture and the further production of creative, cultural and scientific
+works, or to gain reputation or greater distribution for their Work in
+part through the use and efforts of others.
+
+For these and/or other purposes and motivations, and without any
+expectation of additional consideration or compensation, the person
+associating CC0 with a Work (the "Affirmer"), to the extent that he or she
+is an owner of Copyright and Related Rights in the Work, voluntarily
+elects to apply CC0 to the Work and publicly distribute the Work under its
+terms, with knowledge of his or her Copyright and Related Rights in the
+Work and the meaning and intended legal effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+protected by copyright and related or neighboring rights ("Copyright and
+Related Rights"). Copyright and Related Rights include, but are not
+limited to, the following:
+
+ i. the right to reproduce, adapt, distribute, perform, display,
+ communicate, and translate a Work;
+ ii. moral rights retained by the original author(s) and/or performer(s);
+iii. publicity and privacy rights pertaining to a person's image or
+ likeness depicted in a Work;
+ iv. rights protecting against unfair competition in regards to a Work,
+ subject to the limitations in paragraph 4(a), below;
+ v. rights protecting the extraction, dissemination, use and reuse of data
+ in a Work;
+ vi. database rights (such as those arising under Directive 96/9/EC of the
+ European Parliament and of the Council of 11 March 1996 on the legal
+ protection of databases, and under any national implementation
+ thereof, including any amended or successor version of such
+ directive); and
+vii. other similar, equivalent or corresponding rights throughout the
+ world based on applicable law or treaty, and any national
+ implementations thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention
+of, applicable law, Affirmer hereby overtly, fully, permanently,
+irrevocably and unconditionally waives, abandons, and surrenders all of
+Affirmer's Copyright and Related Rights and associated claims and causes
+of action, whether now known or unknown (including existing as well as
+future claims and causes of action), in the Work (i) in all territories
+worldwide, (ii) for the maximum duration provided by applicable law or
+treaty (including future time extensions), (iii) in any current or future
+medium and for any number of copies, and (iv) for any purpose whatsoever,
+including without limitation commercial, advertising or promotional
+purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
+member of the public at large and to the detriment of Affirmer's heirs and
+successors, fully intending that such Waiver shall not be subject to
+revocation, rescission, cancellation, termination, or any other legal or
+equitable action to disrupt the quiet enjoyment of the Work by the public
+as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason
+be judged legally invalid or ineffective under applicable law, then the
+Waiver shall be preserved to the maximum extent permitted taking into
+account Affirmer's express Statement of Purpose. In addition, to the
+extent the Waiver is so judged Affirmer hereby grants to each affected
+person a royalty-free, non transferable, non sublicensable, non exclusive,
+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
+maximum duration provided by applicable law or treaty (including future
+time extensions), (iii) in any current or future medium and for any number
+of copies, and (iv) for any purpose whatsoever, including without
+limitation commercial, advertising or promotional purposes (the
+"License"). The License shall be deemed effective as of the date CC0 was
+applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+ surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
+ warranties of any kind concerning the Work, express, implied,
+ statutory or otherwise, including without limitation warranties of
+ title, merchantability, fitness for a particular purpose, non
+ infringement, or the absence of latent or other defects, accuracy, or
+ the present or absence of errors, whether or not discoverable, all to
+ the greatest extent permissible under applicable law.
+ c. Affirmer disclaims responsibility for clearing rights of other persons
+ that may apply to the Work or any use thereof, including without
+ limitation any person's Copyright and Related Rights in the Work.
+ Further, Affirmer disclaims responsibility for obtaining any necessary
+ consents, permissions or other rights required for any use of the
+ Work.
+ d. Affirmer understands and acknowledges that Creative Commons is not a
+ party to this document and has no duty or obligation with respect to
+ this CC0 or use of the Work.
diff --git a/mobs_bat/sounds/animal_bat.ogg b/mobs_bat/sounds/animal_bat.ogg
index faad6bf..eb36565 100644
Binary files a/mobs_bat/sounds/animal_bat.ogg and b/mobs_bat/sounds/animal_bat.ogg differ
diff --git a/mobs_birds/License.txt b/mobs_birds/License.txt
index 3286a75..b91c13a 100644
--- a/mobs_birds/License.txt
+++ b/mobs_birds/License.txt
@@ -1,5 +1,23 @@
-Licenses
+# mobs_birds
+(from blert2112's mobs_sky modpack)
-Model and textures:
- CC-BY-SA 3.0, Author sapier
- URL: http://creativecommons.org/licenses/by-sa/3.0/de/legalcode
\ No newline at end of file
+## Authors and Licensing
+
+* Media: CC BY-SA 3.0
+ http://creativecommons.org/licenses/by-sa/3.0/de/legalcode
+ * Model and textures by sapier
+
+* Code:
+ The distributor of the original mobs_sky modpack implicitly permits
+ explicitly encourages anyone to redistribute (see
+ ,
+ ) or to
+ modify then redistribute (see
+ ) the
+ mobs_sky modpack.
+
+Further evidence of author's indent: by including a license file in each
+mod that doesn't mention any boundaries (other than CC licenses which
+have been retained here) in a public repository, the original author(s)
+indicate(s) that the code and media are publicly licensed, as opposed to
+not being licensed and opposed to having a limited license.
diff --git a/mobs_butterfly/License.txt b/mobs_butterfly/License.txt
index 11d9289..91ea4bd 100644
--- a/mobs_butterfly/License.txt
+++ b/mobs_butterfly/License.txt
@@ -1,6 +1,24 @@
-Licenses
+# mobs_butterfly
+(from blert2112's mobs_sky modpack)
-Model/Textures: unknown
-Author: AspireMint
+## Authors and Licensing
-texture modification by: blert2112
+* Media: CC BY-SA 3.0
+ http://creativecommons.org/licenses/by-sa/3.0/de/legalcode
+ * Model/Textures: (original author unknown)
+ * texture modification by: blert2112
+
+* Code:
+ The distributor of the original mobs_sky modpack implicitly permits
+ explicitly encourages anyone to redistribute (see
+ ,
+ ) or to
+ modify then redistribute (see
+ ) the
+ mobs_sky modpack.
+
+Further evidence of author's indent: by including a license file in each
+mod that doesn't mention any boundaries (other than CC licenses which
+have been retained here) in a public repository, the original author(s)
+indicate(s) that the code and media are publicly licensed, as opposed to
+not being licensed and opposed to having a limited license.