We have an injured night hawk and a permit to care for it,but aren't
sure which hole in its throat is the crop and what to feed it. It is a
baby bird.  There is a small opening farthest from the throat which we
believe to be the crop.  There is a larger opening close to the throat
which we believe to be for breathing.  Can you help us so we can try
to resuscitate this bird?  We need mostly the anatomy part.  However,
any advice you have for such a young raptor woudl be appreciated.

Hello mssunny-ga

Most sites I looked at advise that rehabilitation of raptors needs to
be left to experienced people, and so do not provide any information
on how it is done.  However, I did manage to find some information,
and I do hope it will help you to help your little night hawk:

An article on the use of crop needles (crop tubes) describes how to
insert one into the crop.  This information might be of assistance in
helping you to feed your baby hawk:
http://www.birds2grow.com/art-croptube.html
Here are some pictures of how to hold the bird during the procedure
http://www.birds2grow.com/art-cropneedling.html
As for which is the crop, another page on the same site has this to
say: “The trachea is much smaller in diameter than the oesophagus”
(the crop is part of the esophagus, while the trachea is used for
breathing)  http://www.birds2grow.com/art-croptube.html

You might wish to ask advice from experts in the care of raptors:

The web site of Birds of Prey Foundation, Boulder County, Colorado has
information on feeding hatchlings:
http://www.birds-of-prey.org/rehabinfo/feeding_hatchlings.htm,
You can contact them with questions and requests for advice at
raptor@birds-of-prey.org.  The telephone number is (303) 460-0674

Another place to turn for advice is Rehabitat, which deals, among
other things, with the rehabilitation of injured raptors: Rehabitat,
P.O. Box 81, Dillsburg, PA 17019-9663,
Fax: (717) 432-7883     Phone: (717) 432-9483    email
wendy@rehabitat.org
http://www.rehabitat.org/

Here is an article on the care of orphaned baby birds in general, but
you might find it relevant for your baby hawk
http://www.birdsnways.com/wisdom/ww36e.htm

I don’t know if you want to pay for further information.  I have found
an ebook for $4.97 on “Helping Injured or Orphaned Wild Birds” by
Diane Scarazzini, which includes chapters on baby birds and on injured
raptors  http://www.how-to-do-it-ebooks.com/alpha6h.htm  I have not
looked at this book and cannot vouch for its reliability.

Search strategy on Google:  1.  bird, anatomy, crop   2.  feeding,
orphaned, raptors

Just to clarify - a Nighthawk is not a raptor or a hawk. It is a
member of the nightjar family - Caprimulgidae. For a picture of a
Nighthawk see http://www.migratus.com/bird/Common%20Nighthawk/
and for information about the two species of Nighthawks in the US see
http://www.mbr-pwrc.usgs.gov/id/framlst/i4200id.html

Raptors or Birds of Prey are members of the these families:
Eagles, Hawks, Kites - Accipitridae
Falcons - Falconidae