Why is chrome looking for '/assets/otis_redding.png'?

Question

I've got a Rails app I'm working on. Totally unclear, but using Chrome in not-hidden mode, keeps producing a request to my local server that is looking for /assets/otis_redding.png. This does not happen in chrome hidden mode or with firefox or safari. I'm usually good at debugging rails business but this is weird.

Any thoughts on what is happening?

Started GET "/" for 127.0.0.1 at 2014-11-20 09:11:25 -0800
Processing by Devise::SessionsController#new as HTML
  Rendered devise/shared/_links.erb (0.5ms)
  Rendered devise/sessions/new.html.erb within layouts/application (3.0ms)
Completed 200 OK in 26ms (Views: 24.7ms | ActiveRecord: 0.0ms)

ActionController::RoutingError (No route matches [GET] "/assets/otis_redding.png"):
  actionpack (4.1.5) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (4.1.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.1.5) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.1.5) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.1.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.1.5) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.1.5) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.1.5) lib/rails/rack/logger.rb:20:in `call'
  quiet_assets (1.0.3) lib/quiet_assets.rb:23:in `call_with_quiet_assets'
  actionpack (4.1.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.1.5) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  actionpack (4.1.5) lib/action_dispatch/middleware/static.rb:64:in `call'
  rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
  railties (4.1.5) lib/rails/engine.rb:514:in `call'
  railties (4.1.5) lib/rails/application.rb:144:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
  /Users/jd/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /Users/jd/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /Users/jd/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'

It would appear that this problem is related to modernizr?

But the modernizr code in question doesn't seem to be calling this. I'm way confused.