BNA (Birds of North America Online) RSHA account indicates a broad array 
of prey and variability from year to year and geographically:

"MAJOR FOOD ITEMS
Most data from breeding season near active nests. Meadow vole (Microtus 
pennsylvanicus) and eastern chipmunk (Tamias striatus) are key prey in 
much of e. North America (Stewart 1949, Craighead and Craighead 1956, 
Portnoy and Dodge 1979, Bednarz and Dinsmore 1985, Welch 1987). 
Peromyscus mice, snakes, American toads (Bufo americanus), and frogs are 
also commonly eaten; carrion less often (Palmer 1988, Dykstra et al. 
2003, Pranty 2002), grasshoppers in quantities during outbreaks (Brown 
and Amadon 1968). Crayfish are common in nests of some populations in 
Midwest (Kimmel and Fredrickson 1981, Bednarz and Dinsmore 1985) and 
South (Townsend 2006). In Wisconsin, during winter, Mourning Doves 
(Zenaida macroura), House Sparrows (Passer domesticus), and Starlings 
(Sturnus vulgaris) are commonly taken at feeders (J. Jacobs pers comm.), 
although small mammals are more typical prey (Craighead and Craighead 
1956). One bird was observed delivering to its young a passerine nest 
containing at least two nestlings (Dykstra et al. 2003) See also 
Breeding: parental care."

"QUANTITATIVE ANALYSES.
Percentage of prey types caught varies geographically (Table 2) and 
often dramatically among years (Craighead and Craighead 1956, Penak 
1982, Bednarz and Dinsmore 1985, Townsend 2006). In general, amphibians 
and snakes made up a greater proportion of the diet in the south than in 
the north. Pellet analyses are particularly unreliable for this species, 
as highly-digestible amphibians and invertebrates are usually 
under-represented in pellets (Portnoy and Dodge 1979, Bednarz and 
Dinsmore 1985, Welch 1987)."

Subscription to BNA is well worth it if you're interested in such info.  
http://bna.birds.cornell.edu/bna

Jim Moore
Rockville, MD

On 6/5/2012 8:57 AM, Mary Pfaffko wrote:
> I’ve seen Red-shoulders catch&  devour Five-lined skinks down in FL.
>
> Mary
>
>
> -----Original Message-----
> From: Maryland Birds&  Birding [mailto:[log in to unmask]] On Behalf Of Tony Futcher
> Sent: Monday, June 04, 2012 2:14 PM
> To: 
> Subject: Re: [MDOSPREY] Birds 2 - Reptiles 0 - Kingman Island
>
> My understanding is that reptiles make up a regular portion of Red-shouldered Hawks diet.
>
> Just to check, I ran it by the Cornell info on RSHA, and they confirm that reptiles are a regular portion of their diet.
>
> Regards,
>
> Tony Futcher
> Hyattsville, MD
>
> On 6/4/2012 1:57 PM, Daniel Rauch wrote:
>> Birds 2 – Reptiles 0
>>
>> Last summer I saw a red-shouldered hawk at Kingman Island catch and carry off a snake near the bike path. I thought it was an anomaly. A red-shouldered hawk not only had another snake this morning, but I saw it snag another last Thursday. Is this hawk species a reptile specialist, or a skilled individual?
>>
>> Other highlights as Kingman/Heritage Island this morning:
>>
>> Warbling vireo – 1
>> Orchard oriole  - 1 male in mid molt
>> Eastern kingbird – 4  (2 fledglings just learning how to fly) Indigo
>> bunting – 5 Red-winged blackbird – 9 (4 fledglings) Great egret – 1
>>
>> Lots of dragonflies out today, including unicorn spiketails.
>>
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