Puzzle

 ACROSS

  1 Outback birds

  5 Horse tail sound

 10 Moisturizing butter type

 14 Nevada gambling destination

 15 ___ New Guinea

 16 Give the boot to

 17 Egg part, redundantly?

 19 Sooty stuff

 20 Priest or imam

 21 Bygone Buick

 23 Strong couple?

 24 Well-groomed?

 26 PC linkup

 27 Barbra Streisand's 1983 headspace?

 30 Send out

 31 Years back

 32 Poll worker's request

 36 Claimed

 39 Gem with black and fire varieties

 40 "Ta-ta!"

 41 Lemon mousse, to a non-foodie?

 47 "Just the Way You ___"

 48 Closes

 49 Warty hopper

 51 First book in the Book

 53 Swab

 55 Blues great James

 56 Scream from the other bathroom when someone flushes the toilet?

 59 GPS suggestions

 60 Praise

 61 End of the world?

 62 One-named British-Nigerian singer

 63 Wiped out

 64 One-named Irish singer

DOWN

  1 "The Very Busy Spider" author Carle

  2 ___ Park (Facebook headquarters site)

  3 Not hot

  4 Evening event

  5 Work detail, briefly

  6 Modus operandi

  7 Big step for a unicorn?: Abbr.

  8 Gloomy

  9 NBA legend Olajuwon

 10 Former slugger Sammy

 11 Bringing down a peg

 12 Progressive rival

 13 Took care of, with "to"

 18 Sometimes-romantic meal

 22 Rainbow's place

 24 Went down a chute

 25 Property that lacks curb appeal

 28 Texter's "Enough already!"

 29 Companion of Larry

 32 Travelers

 33 Gilbert and Sullivan genre

 34 Skilled

 35 Letter-shaped wing

 36 Supports

 37 Schoolboy

 38 Not leave

 40 A ___ above the rest

 42 WWII spy org.

 43 Low-tech mixers

 44 One may be one-arm

 45 2014 Rae Sremmurd song about romantic preference

 46 "Let's play!"

 50 Mover's platform

 52 Stressless state

 53 Toward sunset

 54 Urgent request

 57 Wordsworth work

 58 Triumphed

Solution